WO2009139310A1 - 色素増感型太陽電池およびその製造方法 - Google Patents
色素増感型太陽電池およびその製造方法 Download PDFInfo
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- WO2009139310A1 WO2009139310A1 PCT/JP2009/058558 JP2009058558W WO2009139310A1 WO 2009139310 A1 WO2009139310 A1 WO 2009139310A1 JP 2009058558 W JP2009058558 W JP 2009058558W WO 2009139310 A1 WO2009139310 A1 WO 2009139310A1
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- dye
- electrode
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- metal
- solar cell
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- QTNLQPHXMVHGBA-UHFFFAOYSA-H hexachlororhodium Chemical compound Cl[Rh](Cl)(Cl)(Cl)(Cl)Cl QTNLQPHXMVHGBA-UHFFFAOYSA-H 0.000 description 1
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- SKWCWFYBFZIXHE-UHFFFAOYSA-K indium acetylacetonate Chemical compound CC(=O)C=C(C)O[In](OC(C)=CC(C)=O)OC(C)=CC(C)=O SKWCWFYBFZIXHE-UHFFFAOYSA-K 0.000 description 1
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- UETZVSHORCDDTH-UHFFFAOYSA-N iron(2+);hexacyanide Chemical compound [Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] UETZVSHORCDDTH-UHFFFAOYSA-N 0.000 description 1
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
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- LKKPNUDVOYAOBB-UHFFFAOYSA-N naphthalocyanine Chemical compound N1C(N=C2C3=CC4=CC=CC=C4C=C3C(N=C3C4=CC5=CC=CC=C5C=C4C(=N4)N3)=N2)=C(C=C2C(C=CC=C2)=C2)C2=C1N=C1C2=CC3=CC=CC=C3C=C2C4=N1 LKKPNUDVOYAOBB-UHFFFAOYSA-N 0.000 description 1
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- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- XEBWQGVWTUSTLN-UHFFFAOYSA-M phenylmercury acetate Chemical compound CC(=O)O[Hg]C1=CC=CC=C1 XEBWQGVWTUSTLN-UHFFFAOYSA-M 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N phosphine group Chemical group P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 125000004193 piperazinyl group Chemical group 0.000 description 1
- 125000003386 piperidinyl group Chemical group 0.000 description 1
- 229960005235 piperonyl butoxide Drugs 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920000553 poly(phenylenevinylene) Polymers 0.000 description 1
- 229920002627 poly(phosphazenes) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
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- 239000005518 polymer electrolyte Substances 0.000 description 1
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- 229910052700 potassium Inorganic materials 0.000 description 1
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical compound [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- XPGAWFIWCWKDDL-UHFFFAOYSA-N propan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCC[O-].CCC[O-].CCC[O-].CCC[O-] XPGAWFIWCWKDDL-UHFFFAOYSA-N 0.000 description 1
- GPQVVAFBSNIQLX-UHFFFAOYSA-N propan-2-olate;tin(2+) Chemical compound CC(C)O[Sn]OC(C)C GPQVVAFBSNIQLX-UHFFFAOYSA-N 0.000 description 1
- UZXWWAFGEOYBQG-UHFFFAOYSA-N propan-2-olate;zirconium(2+) Chemical compound CC(C)O[Zr]OC(C)C UZXWWAFGEOYBQG-UHFFFAOYSA-N 0.000 description 1
- ZGSOBQAJAUGRBK-UHFFFAOYSA-N propan-2-olate;zirconium(4+) Chemical compound [Zr+4].CC(C)[O-].CC(C)[O-].CC(C)[O-].CC(C)[O-] ZGSOBQAJAUGRBK-UHFFFAOYSA-N 0.000 description 1
- PXDRFTPXHTVDFR-UHFFFAOYSA-N propane;titanium(4+) Chemical compound [Ti+4].C[CH-]C.C[CH-]C.C[CH-]C.C[CH-]C PXDRFTPXHTVDFR-UHFFFAOYSA-N 0.000 description 1
- 229960000380 propiolactone Drugs 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- DHGFMVMDBNLMKT-UHFFFAOYSA-N propyl 3-oxobutanoate Chemical compound CCCOC(=O)CC(C)=O DHGFMVMDBNLMKT-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- BBFCIBZLAVOLCF-UHFFFAOYSA-N pyridin-1-ium;bromide Chemical compound Br.C1=CC=NC=C1 BBFCIBZLAVOLCF-UHFFFAOYSA-N 0.000 description 1
- BJDYCCHRZIFCGN-UHFFFAOYSA-N pyridin-1-ium;iodide Chemical compound I.C1=CC=NC=C1 BJDYCCHRZIFCGN-UHFFFAOYSA-N 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000001008 quinone-imine dye Substances 0.000 description 1
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- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 239000001022 rhodamine dye Substances 0.000 description 1
- KIWUVOGUEXMXSV-UHFFFAOYSA-N rhodanine Chemical compound O=C1CSC(=S)N1 KIWUVOGUEXMXSV-UHFFFAOYSA-N 0.000 description 1
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- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- UTXIVEZZTQLQDT-UHFFFAOYSA-N silver nitric acid nitrate Chemical compound [N+](=O)(O)[O-].[N+](=O)([O-])[O-].[Ag+] UTXIVEZZTQLQDT-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 description 1
- DBKCLWTWMFVXQN-UHFFFAOYSA-M sodium sulfuric acid chloride Chemical compound [Na+].[Cl-].OS(O)(=O)=O DBKCLWTWMFVXQN-UHFFFAOYSA-M 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
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- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
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- XPQYLUGYVZNMLC-UHFFFAOYSA-N tantalum(5+);2,2,2-trifluoroethanolate Chemical compound [Ta+5].[O-]CC(F)(F)F.[O-]CC(F)(F)F.[O-]CC(F)(F)F.[O-]CC(F)(F)F.[O-]CC(F)(F)F XPQYLUGYVZNMLC-UHFFFAOYSA-N 0.000 description 1
- 229910052713 technetium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- KEBMUYGRNKVZOX-UHFFFAOYSA-N tetra(propan-2-yl)silane Chemical compound CC(C)[Si](C(C)C)(C(C)C)C(C)C KEBMUYGRNKVZOX-UHFFFAOYSA-N 0.000 description 1
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 description 1
- REWDXIKKFOQRID-UHFFFAOYSA-N tetrabutylsilane Chemical compound CCCC[Si](CCCC)(CCCC)CCCC REWDXIKKFOQRID-UHFFFAOYSA-N 0.000 description 1
- AFCAKJKUYFLYFK-UHFFFAOYSA-N tetrabutyltin Chemical compound CCCC[Sn](CCCC)(CCCC)CCCC AFCAKJKUYFLYFK-UHFFFAOYSA-N 0.000 description 1
- VCZQFJFZMMALHB-UHFFFAOYSA-N tetraethylsilane Chemical compound CC[Si](CC)(CC)CC VCZQFJFZMMALHB-UHFFFAOYSA-N 0.000 description 1
- RWWNQEOPUOCKGR-UHFFFAOYSA-N tetraethyltin Chemical compound CC[Sn](CC)(CC)CC RWWNQEOPUOCKGR-UHFFFAOYSA-N 0.000 description 1
- ACOVYJCRYLWRLR-UHFFFAOYSA-N tetramethoxygermane Chemical compound CO[Ge](OC)(OC)OC ACOVYJCRYLWRLR-UHFFFAOYSA-N 0.000 description 1
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
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- JTGNPNLBCGBCMP-UHFFFAOYSA-N tetraoctylstannane Chemical compound CCCCCCCC[Sn](CCCCCCCC)(CCCCCCCC)CCCCCCCC JTGNPNLBCGBCMP-UHFFFAOYSA-N 0.000 description 1
- ZUEKXCXHTXJYAR-UHFFFAOYSA-N tetrapropan-2-yl silicate Chemical compound CC(C)O[Si](OC(C)C)(OC(C)C)OC(C)C ZUEKXCXHTXJYAR-UHFFFAOYSA-N 0.000 description 1
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- 229930192474 thiophene Natural products 0.000 description 1
- AXZWODMDQAVCJE-UHFFFAOYSA-L tin(II) chloride (anhydrous) Chemical compound [Cl-].[Cl-].[Sn+2] AXZWODMDQAVCJE-UHFFFAOYSA-L 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- YONPGGFAJWQGJC-UHFFFAOYSA-K titanium(iii) chloride Chemical compound Cl[Ti](Cl)Cl YONPGGFAJWQGJC-UHFFFAOYSA-K 0.000 description 1
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- MYWQGROTKMBNKN-UHFFFAOYSA-N tributoxyalumane Chemical compound [Al+3].CCCC[O-].CCCC[O-].CCCC[O-] MYWQGROTKMBNKN-UHFFFAOYSA-N 0.000 description 1
- OQHFCGMHBBJUAH-UHFFFAOYSA-N triethoxy(2-ethoxyethoxy)germane Chemical compound C(C)OCCO[Ge](OCC)(OCC)OCC OQHFCGMHBBJUAH-UHFFFAOYSA-N 0.000 description 1
- DENFJSAFJTVPJR-UHFFFAOYSA-N triethoxy(ethyl)silane Chemical compound CCO[Si](CC)(OCC)OCC DENFJSAFJTVPJR-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- VCSUQOHFBBQHQV-UHFFFAOYSA-N triethoxy(methyl)stannane Chemical compound CCO[Sn](C)(OCC)OCC VCSUQOHFBBQHQV-UHFFFAOYSA-N 0.000 description 1
- BUZKVHDUZDJKHI-UHFFFAOYSA-N triethyl arsorite Chemical compound CCO[As](OCC)OCC BUZKVHDUZDJKHI-UHFFFAOYSA-N 0.000 description 1
- JGOJQVLHSPGMOC-UHFFFAOYSA-N triethyl stiborite Chemical compound [Sb+3].CC[O-].CC[O-].CC[O-] JGOJQVLHSPGMOC-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- OPSWAWSNPREEFQ-UHFFFAOYSA-K triphenoxyalumane Chemical compound [Al+3].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 OPSWAWSNPREEFQ-UHFFFAOYSA-K 0.000 description 1
- 125000005580 triphenylene group Chemical group 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
- ZRXVCYGHAUGABY-UHFFFAOYSA-O tris(4-bromophenyl)azanium Chemical compound C1=CC(Br)=CC=C1[NH+](C=1C=CC(Br)=CC=1)C1=CC=C(Br)C=C1 ZRXVCYGHAUGABY-UHFFFAOYSA-O 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000001018 xanthene dye Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910003454 ytterbium oxide Inorganic materials 0.000 description 1
- 229940075624 ytterbium oxide Drugs 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- NHXVNEDMKGDNPR-UHFFFAOYSA-N zinc;pentane-2,4-dione Chemical compound [Zn+2].CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O NHXVNEDMKGDNPR-UHFFFAOYSA-N 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
- H01G9/2031—Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2059—Light-sensitive devices comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/542—Dye sensitized solar cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a dye-sensitized solar cell.
- the present invention relates to a dye-sensitized solar cell having excellent photoelectric conversion efficiency and improved durability and a method for producing the same.
- a dye-sensitized solar cell has attracted attention as a solar cell using an organic material instead of a silicon-based solar cell, and research and development has been actively conducted.
- the operation principle of a general dye-sensitized solar cell is as follows.
- the sensitizing dye adsorbed on the metal oxide semiconductor electrode absorbs sunlight to generate excited electrons.
- the excited electrons move to the metal oxide semiconductor and connect the electrodes via a transparent conductive film.
- the electrons that have moved to the counter electrode reduce the electrolytic solution, and the electrolytic solution releases the electrons and reduces the sensitizing dye that is in an oxidized state.
- the electrolytic solution is in contact with the transparent conductive film, and excited electrons are injected from the transparent conductive film into the electrolytic solution.
- the open circuit voltage is lowered, and as a result, the photoelectric conversion efficiency is lowered.
- the electrolyte solution containing an iodine redox when the electrolyte solution was contacting with the transparent conductive film, there also existed a subject that a conductive film corroded by electrolyte solution and durability deteriorated.
- a metal oxide thin film such as indium-doped tin oxide (ITO) or fluorine-doped tin oxide (FTO) is formed on a substrate as a transparent conductive film by vapor deposition or sputtering.
- ITO indium-doped tin oxide
- FTO fluorine-doped tin oxide
- this conventional transparent conductive film has a high material cost and manufacturing cost, and the above metal oxide constituting the transparent conductive film has a drawback that it has a significantly higher resistivity than a metal or the like. This was one of the reasons for the decrease in efficiency. Although the resistivity can be lowered by increasing the thickness of the transparent conductive film, the light transmittance is lowered by this, resulting in an increase in material cost and manufacturing cost.
- the conductive property of the electrode is improved by providing a mesh-like or grid-like metal current collector thin film as a transparent conductive film, and furthermore, corrosion prevention comprising an insulating layer on the metal current collector thin film
- covering with a layer is proposed (for example, refer patent document 3, 4).
- the base material itself has a barrier property against water vapor or gas (oxygen or the like) (for example, Patent Document 5), or a coating layer for newly barriering water vapor or gas (oxygen or the like).
- Patent Document 6 discloses a technique for making the efficiency and durability of the element compatible.
- these techniques are solutions to the problem of water vapor and gas (oxygen, etc.) entering from the outside of the device, and there is no mention of the effect of the corrosion resistance of the metal wiring electrode against the electrolyte as described above. It was.
- the present invention is to solve the conventional problems as described above, and its purpose is to realize reverse photoelectric transfer and to realize excellent photoelectric conversion efficiency by improving the conductivity of the electrode, and to perform electrolysis. It is an object to provide a dye-sensitized solar cell in which corrosion of an electrode by a liquid is significantly suppressed, and a method for producing the same.
- the problem of the present invention has been solved by having an intermediate layer between the metal current collecting grid and the semiconductor porous membrane layer and suitably designing the water vapor permeability of the intermediate layer. This will be specifically described below.
- An anode electrode obtained by laminating a conductive base material including at least a metal current collecting grid on a light-transmitting base material, a semiconductor porous film layer on which a sensitizing dye is adsorbed, and a semiconductor porous material of the anode electrode
- the dye-sensitized solar cell comprising a cathode electrode facing the membrane layer side and an electrolyte sealed between the two electrodes of the anode electrode and the cathode electrode, the conductive substrate and the semiconductor porous membrane layer
- a dye-sensitized solar cell characterized in that an intermediate layer is interposed between the intermediate layer and the water vapor permeability of the intermediate layer is 0.1 g / (m 2 ⁇ 24 h) or less.
- An anode electrode obtained by laminating a conductive base material made of a metal current collecting grid on a light-transmitting base material and a semiconductor porous film layer adsorbing a sensitizing dye, and the semiconductor porous film of the anode electrode
- a method for producing a dye-sensitized solar cell comprising a cathode electrode facing the layer side and an electrolyte sealed between the two electrodes, the anode electrode and the cathode electrode, the conductive substrate and the porous semiconductor
- An intermediate layer is formed between the film layer and the intermediate layer in the presence of a carrier gas composed of at least an organometallic compound, a reducing gas, and a rare gas or nitrogen, and at atmospheric pressure or a pressure close thereto.
- a method for producing a dye-sensitized solar cell which is formed by a plasma CVD method.
- the present invention it was possible to provide a dye-sensitized solar cell that achieves excellent photoelectric conversion efficiency, significantly suppresses corrosion of the electrode due to the electrolytic solution, and is extremely excellent in durability.
- FIG. 1 is a schematic cross-sectional view showing the basic structure of the dye-sensitized solar cell of the present invention.
- the dye-sensitized solar cell of the present invention has a metal current collecting layer (current collecting grid) 1a on a transparent substrate 5a as a conductive substrate and a transparent conductive layer 1 as a preferred embodiment here.
- An anode electrode having a metal oxide intermediate layer 6 formed thereon and a metal oxide semiconductor layer (semiconductor porous film layer) 2 composed of a semiconductor film having a dye adsorbed on the surface thereof; a charge transfer layer ( 3) (which may also be referred to as “electrolyte layer”), and a conductive layer 4 on the surface of the substrate 5 as a counter electrode (cathode electrode).
- the dye-sensitized solar cell of the present invention When the dye-sensitized solar cell of the present invention is irradiated with sunlight or electromagnetic waves equivalent to sunlight, the dye adsorbed on the metal oxide semiconductor layer (semiconductor porous film layer) 2 is irradiated with sunlight or electromagnetic waves. Is absorbed and excited. Electrons generated by excitation move from the metal oxide semiconductor layer 2 through the metal oxide intermediate layer 6 to the metal current collecting layer 1a and the transparent conductive layer 1, and then through the external circuit, the conductive layer 4 of the counter electrode. To reduce the redox electrolyte of the charge transfer layer 3.
- the dye that has moved the electrons is an oxidant, but is reduced to the original by supplying electrons from the counter electrode (cathode electrode) to the anode electrode via the redox electrolyte of the charge transfer layer 3.
- the redox electrolyte of the charge transfer layer 3 is oxidized and returned to a state where it can be reduced again by the electrons supplied from the counter electrode. In this way, electrons flow and the dye-sensitized solar cell of the present invention can be configured.
- the dye-sensitized solar cell of the present invention includes a conductive base material (hereinafter also referred to as a conductive layer) including a metal current collector grid (hereinafter also referred to as a metal current collector layer) and a metal oxide semiconductor layer (semiconductor porous material). It is characterized by having an intermediate layer having a water vapor permeability of 0.1 g / (m 2 ⁇ 24 h) or less.
- the water vapor transmission rate here is represented by the amount of water vapor transmission per unit area and unit time, and measured according to JIS K7129: 1992B method at 40 ° C. and 90% RH. Evaluation can be performed using the apparatus PERMATRAN-W3 / 33G type or the like.
- the moisture absorption product of metallic calcium is evaluated more accurately under the conditions of 40 ° C. and 90% RH in accordance with JISZ0208. This is a preferable technique in the present invention.
- the water vapor permeability of the intermediate layer is preferably 10 ⁇ 8 g / (m 2 ⁇ 24 h) or more and 0.1 g / (m 2 ⁇ 24 h) or less, and 10 ⁇ 6 g / (m 2 ⁇ 24 h) or more and 10 ⁇ . More preferably, it is 2 g / (m 2 ⁇ 24 h) or less.
- the metal oxide constituting the intermediate layer include titanium oxide, zinc oxide, zirconium oxide, strontium titanate, niobium oxide and the like. These may be used alone or in combination, or doped with metal atoms. It can also be used as a composite metal oxide.
- the metal oxide intermediate layer is more preferably a mode having a function of suppressing reverse electron transfer, and a metal oxide having a conduction band lower end potential that is the same level as or lower than the conduction band lower end potential of the semiconductor porous film layer. More preferably, it is used.
- the thickness of the metal oxide intermediate layer is preferably 1 nm or more and 200 nm or less, more preferably 5 nm or more and 100 nm or less, and further preferably 5 nm or more and 50 nm or less.
- the porosity of the metal oxide intermediate layer is preferably smaller than the porosity of the metal oxide semiconductor layer. Specifically, the porosity is preferably 10% or less, more preferably 1% or less. More preferably, it is 5% or less. When the porosity of the metal oxide intermediate layer is small, the water vapor transmission rate is greatly reduced, which is preferable. Furthermore, the movement of electrons in the reverse direction is less likely to occur, and adhesion and durability with the conductive substrate are greatly improved.
- the metal oxide intermediate layer may have a laminated structure of two or more layers, and the composition and thickness of the metal oxide to be configured can be arbitrarily controlled.
- the porosity means a porosity that is penetrable in the thickness direction of the dielectric, and can be measured using a commercially available device such as a mercury porosimeter (Shimadzu porer 9220 type).
- the method for producing the metal oxide intermediate layer is not particularly limited as long as the water vapor transmission rate of the present invention can be obtained.
- Vacuum deposition method, ion sputtering method, ion plating method, casting method, coating method, spin coating method, spray method And various thin film forming methods such as an aerosol deposition method (AD method), an immersion method, an electrolytic polymerization method, a photoelectrolytic polymerization method, and a pressure press method.
- a method for producing a metal oxide intermediate layer achieving water vapor transmission rate As a method for producing a metal oxide intermediate layer achieving water vapor transmission rate according to the present invention, a method for forming a metal oxide thin film using plasma irradiation or plasma CVD method under atmospheric pressure or equivalent atmospheric pressure is preferable. As mentioned.
- atmospheric pressure or equivalent atmospheric pressure is about 20 kPa to 110 kPa.
- 93 kPa to 104 kPa is preferable.
- a method for forming a metal oxide intermediate layer (1) A method in which a conductive base material is preliminarily immersed in a solution of a metal compound, subjected to a drying step, and treated in a plasma containing oxygen to form an intermediate layer. (2) A method of forming an intermediate layer by forming plasma on a conductive substrate with a gas containing a metal compound gas and oxygen and spraying it can be mentioned.
- the surface of the conductive substrate is coated with a reactive sol by immersing it in a dilute solution of the metal compound, and the surface of the conductive substrate is uniformly applied by performing plasma irradiation containing oxygen radicals.
- the coating layer can be formed in a very short time.
- both methods (1) and (2) can be preferably used, and (2) can form a film having a higher density, and therefore has a feature that is superior in water vapor permeability.
- an improvement in the short-circuit current Jsc (mA / cm 2 ) estimated to be an effect of reducing the internal resistance can be expected from the uniformity thereof, which can be said to be a more preferable embodiment in the present invention.
- the structure which used (1) and (2) together is also a preferable aspect of the present invention.
- the metal compound (hereinafter sometimes referred to as an organometallic compound) that can be preferably used in the production method according to the present invention is an organometallic compound in which a metal and an organic substance are covalently bonded, coordinated or ionically bonded.
- organometallic compound in which a metal and an organic substance are covalently bonded, coordinated or ionically bonded.
- Preferable examples include metal alkoxides, metal acylates, metal chelates, and organometallic salts.
- a halogen metal compound can be used. In the present invention, it is preferable to use metal alkoxides, halogen metal compounds and the like from the viewpoints of reactivity and stability.
- the organometallic compound useful in the present invention is preferably a compound represented by the following general formula, but is not limited thereto.
- M is a metal (for example, Li, Be, B, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga , Ge, Rb, Sr, Y, Zr, Nb, Mo, Cd, In, Ir, Sn, Sb, Cs, Ba, La, Hf, Ta, W, Tl, Pb, Bi, Ce, Pr, Nd, Pm Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, etc.), R 1 is an alkyl group, R 2 is an alkoxy group, R 3 is a ⁇ -diketone coordination group, ⁇ -ketocarboxylate A group selected from a coordinating group, a ⁇ -ketocarboxylic acid coordinating group and a ketooxy group (ketooxy coordinating group), where the valence of the metal M is a metal (for example, Li, Be, B, Na, Mg, Al, Si
- Examples of the alkyl group represented by R 1 include a methyl group, an ethyl group, a propyl group, and a butyl group.
- Examples of the alkoxy group represented by R 2 include a methoxy group, an ethoxy group, a propoxy group, a butoxy group, and a 3,3,3-trifluoropropoxy group.
- the hydrogen atom of the alkyl group may be substituted with a fluorine atom.
- the group selected from the ⁇ -diketone coordination group, ⁇ -ketocarboxylic acid ester coordination group, ⁇ -ketocarboxylic acid coordination group and ketooxy group (ketooxy coordination group) represented by R 3 includes ⁇ -diketone coordination group
- Examples of the group include 2,4-pentanedione (also referred to as acetylacetone or acetoacetone), 1,1,1,5,5,5-hexamethyl-2,4-pentanedione, 2,2,6,6-tetra Methyl-3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, and the like.
- Examples of ⁇ -ketocarboxylic acid ester coordination groups include acetoacetic acid methyl ester, acetoacetic acid And ethyl ester, propyl acetoacetate, ethyl trimethylacetoacetate, methyl trifluoroacetoacetate, and the like.
- Examples of the acid coordinating group include acetoacetic acid and trimethylacetoacetic acid.
- Examples of the ketooxy coordinating group include an acetooxy group (or acetoxy group), propionyloxy group, butyryloxy group, acryloyloxy group, and methacryloyl An oxy group etc. can be mentioned.
- the number of carbon atoms of these groups is preferably 18 or less including the above-mentioned organometallic compounds. Further, as illustrated, it may be linear or branched, or a hydrogen atom substituted with a fluorine atom.
- an organometallic compound having a low risk of explosion is preferable, and an organometallic compound having at least one oxygen in the molecule is preferable.
- an organometallic compound containing at least one alkoxy group of R 2 , or a ⁇ -diketone coordination group, ⁇ -ketocarboxylic acid ester coordination group, ⁇ -ketocarboxylic acid coordination group and ketooxy of R 3 A metal compound having at least one group selected from a group (ketooxy coordination group) is preferred.
- organic titanium compounds include organic titanium compounds, titanium hydrogen compounds, and titanium halides.
- organic titanium compounds include triethoxy titanium, trimethoxy titanium, triisopropoxy titanium, tributoxy titanium, tetraethoxy titanium, Tetraisopropoxy titanium, methyldimethoxy titanium, ethyl triethoxy titanium, methyl triisopropoxy titanium, triethyl titanium, triisopropyl titanium, tributyl titanium, tetraethyl titanium, tetraisopropyl titanium, tetrabutyl titanium, tetradimethylamino titanium, dimethyl titanium di ( 2,4-pentanedionate), ethyltitanium tri (2,4-pentanedionate), titanium tris (2,4-pentanedionate), titanium tris (acetomethylacetate) ), Triacetoxy titanium, dipropoxypropionyloxy titanium, etc., dibutylyloxy titanium, titanium hydrogen compound as
- tin compounds include organic tin compounds, tin hydrogen compounds, and tin halides.
- organic tin compounds include tetraethyltin, tetramethyltin, di-n-butyltin diacetate, tetrabutyltin, and tetraoctyltin.
- diacetacetonate, ethyltin acetoacetonate, ethoxytin acetoacetonate, dimethyltin diacetoacetonate, tin hydrogen compounds, etc., and tin halides include tin dichloride and tin tetrachloride.
- organosilicon compound examples include tetraethylsilane, tetramethylsilane, tetraisopropylsilane, tetrabutylsilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane, dimethyldimethoxysilane, diethyldiethoxysilane, diethylsilanedi (2 , 4-pentanedionate), methyltrimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, etc., silicon hydrogen compounds such as tetrahydrogenated silane, hexahydrogenated disilane, etc., and halogenated silicon compounds such as tetrachlorosilane , Methyltrichlorosilane, diethyldichlorosilane and the like, and any of them can be preferably used in the present invention
- organic zirconium compounds include zirconium ethoxide, zirconium isopropoxide, zirconium n-propoxide, zirconium n-butoxide, zirconium t-butoxide, zirconium 2-ethylhexyl oxide, zirconium 2-methyl-2-butoxide, tetrakis (trimethyl).
- aluminum alkoxides include aluminum (III) n-butoxide, aluminum (III) s-butoxide, aluminum (III) t-butoxide, aluminum (III) ethoxide, aluminum (III) isopropoxide, aluminum (III ) S-butoxide bis (ethyl acetoacetate), aluminum (III) di-s-butoxide ethyl acetoacetate, aluminum (III) diisopropoxide ethyl acetoacetate, aluminum (III) ethoxyethoxy ethoxide, aluminum hexafluoropenta Dionate, aluminum (III) 3-hydroxy-2-methyl-4-pyronate, aluminum (III) 9-octadecenyl acetoacetate diisopropoxide, aluminum (III) 2,4- Ntanjioneto, aluminum (III) phenoxide, and aluminum (III) 2,2,6,6-tetramethyl-3,5-heptanedionate.
- organometallic compounds include, for example, niobium isopropoxide, antimony ethoxide, arsenic triethoxide, barium 2,2,6,6-tetramethylheptanedionate, beryllium acetylacetonate, bismuth hexafluoropentanedionate.
- Dimethylcadmium calcium 2,2,6,6-tetramethylheptanedionate, chromium trifluoropentanedionate, cobalt acetylacetonate, copper hexafluoropentanedionate, magnesium hexafluoropentanedionate-dimethyl ether complex, gallium ethoxy , Tetraethoxygermane, tetramethoxygermane, hafnium t-butoxide, hafnium ethoxide, indium acetylacetonate, indium 2,6-dimethyl Aminoheptanedionate, ferrocene, lanthanum isopropoxide, lead acetate, tetraethyllead, neodymium acetylacetonate, platinum hexafluoropentanedionate, trimethylcyclopentadienylplatinum, rhodium dicarbonylace
- the metal compound may be selected so that the fine particles forming the metal oxide semiconductor layer (semiconductor porous film layer) of the power generation layer, which will be described later, and the intermediate layer are the same type of metal oxide.
- the semiconductor porous layer and the intermediate layer may have different compositions.
- the intermediate layer may be a mixture of two or more metal compounds at the same time. A metal oxide doped with may be used.
- the solvent uniformly mixes each component in the liquid to prepare the solid content of the composition according to the present invention, and at the same time, can be applied to various coating methods to improve the dispersion stability and storage stability of the composition. Is.
- solvents are not particularly limited as long as they can fulfill the above purpose.
- Preferable examples of these solvents include water and organic solvents that are highly miscible with water.
- organic solvents examples include tetrahydrofuran, dimethoxyethane, formic acid, acetic acid, methyl acetate, alcohols (methanol, ethanol, n-propyl alcohol, iso-propyl alcohol, tert-butyl alcohol), ethylene glycol, diethylene glycol, triethylene glycol , Ethylene glycol monobutyl ether, acetone, N, N-dimethylformamide, N, N-dimethylacetamide, dimethyl sulfoxide and the like.
- the concentration of the metal compound solution at the time of immersing the conductive substrate can be appropriately adjusted within the range of 1 ⁇ M to 1 M (M represents mol / liter), preferably 1 to 100 mM, 10 to 80 mM is preferable.
- the method of coating the conductor surface with a metal compound may be any coating method such as spray method, roll coating method, die coating method, blade coating method, dip coating method, etc., but the dip coating method is a conductive group. It is preferable for coating the material surface.
- the drying method is not particularly limited, and is not particularly limited as long as it is a temperature and treatment capable of removing the solvent or dispersion medium of the metal compound.
- the drying temperature is not particularly limited, but is preferably 180 ° C. or lower, more preferably 30 to 150 ° C., particularly preferably 50 to 130 ° C., and a stable surface coat layer is formed by gradually increasing the temperature from a low temperature. Therefore, it is more preferable.
- a gas or mist by means of gasifying or misting a metal compound as a raw material component.
- gases and mists are (I) mixed with a carrier gas and a reactive gas and then sent directly to the plasma reaction space to generate plasma in an atmosphere containing raw materials to form an intermediate layer, (II) a carrier gas Or a reactive gas, a raw material plasma is generated in advance between the electrodes, and sprayed onto a conductive substrate to form an intermediate layer.
- either method can be preferably used.
- a gas such as oxygen, methane, carbon dioxide, nitrogen (except in the case of a nitrogen atmosphere), ammonia, hydrogen, or the like may be included.
- a gas such as oxygen, methane, carbon dioxide, nitrogen (except in the case of a nitrogen atmosphere), ammonia, hydrogen, or the like may be included.
- the porous membrane according to the present invention it is more preferable to contain 1 ppm to 30% (volume ratio) of oxygen gas together with an inert gas. This is probably because oxygen atom radicals generated by plasma promote the formation of metal oxides.
- the inert gas is a group 18 element of the periodic table, specifically helium, neon, Argon, krypton, xenon, radon, or nitrogen gas is preferably used, and argon or helium is particularly preferably used.
- the present invention it is possible to use a plurality of these gases in combination, but it is preferable that at least the above-described raw material components are in a plasma state and contain a component capable of forming an intermediate layer on the surface of the conductive substrate.
- the plasma treatment according to the present invention is preferably performed at or near atmospheric pressure from the viewpoint of productivity.
- the pressure is preferably 1 Pa to 1 MPa, and atmospheric pressure is more preferable from the viewpoint of workability.
- the starting voltage increases.
- the atmospheric gas is helium, argon, or nitrogen, and AC or high frequency is used as a power source. It is preferable to use it.
- the frequency is preferably 1 kHz to 1 GHz.
- Power to be applied, the porous membrane having a thickness, composition also depends surface properties such as, it is necessary to optimize the conditions, 0.1 seconds using a power in the range of 0.01 ⁇ 10 W / cm 2 Discharge treatment is performed in the range of several tens of seconds. If the applied power is too high, the smoothness of the surface may be impaired and problems such as contamination of scattered substances due to discharge may occur.
- the plasma discharge processing apparatus 10 has a counter electrode composed of a first electrode 11 and a second electrode 12, and the first electrode 11 is connected from the first power source 21 between the counter electrodes.
- a first high frequency electric field of frequency ⁇ 1, electric field strength V1, and current I1 is applied to the second electrode 12, and a second high frequency electric field of frequency ⁇ 2, electric field strength V2, and current I2 from the second power source 22 is applied to the second electrode 12.
- the first power source 21 can apply a higher frequency electric field strength (V1> V2) than the second power source 22, and the first frequency ⁇ 1 of the first power source 21 is lower than the second frequency ⁇ 2 of the second power source 22. I can do it.
- a first filter 23 is installed between the first electrode 11 and the first power source 21 to facilitate passage of current from the first power source 21 to the first electrode 11, and current from the second power source 22. Is designed so that the current from the second power source 22 to the first power source 21 is less likely to pass through.
- a second filter 24 is installed between the second electrode 12 and the second power source 22 to facilitate passage of current from the second power source 22 to the second electrode, and from the first power source 21. It is designed to ground the current and make it difficult to pass the current from the first power source 21 to the second power source.
- a gas G is introduced into the space (discharge space) 13 between the first electrode 11 and the second electrode 12 from a gas supply means as shown in FIG. 3 to be described later, and the first electrode 11 and the second electrode A processing space created by the lower surface of the counter electrode and the base material F by generating a discharge by applying a high frequency electric field from 12 and blowing the gas G in a plasma state to the lower side (lower side of the figure) of the counter electrode Is sprayed on the surface of the conductive base material on the surface of the conductive base material near the processing position 14 on the base material F conveyed from the previous process (not shown). Form a layer.
- the medium heats or cools the electrode through the piping from the electrode temperature adjusting means as shown in FIG.
- the temperature control medium an insulating material such as distilled water or oil is preferably used.
- FIG. 3 shows an example of a plasma processing apparatus by so-called roll-to-roll which can be applied to a film substrate transporting process.
- the atmospheric pressure plasma processing apparatus 30 is an apparatus having an electric field applying means 40 having two power sources, a gas supplying means 50, and an electrode temperature adjusting means 60.
- the base material F is a base material on which a conductive base material is formed.
- a mixture G of gas and a discharge gas such as nitrogen is supplied, activated here and introduced onto the substrate F.
- a discharge space (between the counter electrodes) 32 between the roll rotating electrode (first electrode) 35 and the square tube electrode (second electrode) 36 is connected to the roll rotating electrode (first electrode) 35 from the first power source 41.
- the first high-frequency electric field having the frequency ⁇ 1, the electric field strength V1, and the current I1 is supplied to the square tube electrode (second electrode) 36, and the second high-frequency electric field having the frequency ⁇ 2, the electric field strength V2, and the current I2 is supplied from the second power source 42. It comes to apply.
- a first filter 43 is installed between the roll rotation electrode (first electrode) 35 and the first power supply 41, and the first filter 43 easily passes a current from the first power supply 41 to the first electrode.
- the current from the second power supply 42 is grounded so that the current from the second power supply 42 to the first power supply is difficult to pass.
- a second filter 44 is provided between the square tube electrode (second electrode) 36 and the second power source 42, and the second filter 44 is a current from the second power source 42 to the second electrode. It is designed to make it difficult to pass the current from the first power supply 41 to the second power supply by grounding the current from the first power supply 41.
- the roll rotating electrode 35 may be the second electrode, and the square tube electrode 36 may be the first electrode.
- the first power source is connected to the first electrode, and the second power source is connected to the second electrode.
- the first power source preferably applies a higher high-frequency electric field strength (V1> V2) than the second power source. Further, the frequency has the ability to satisfy ⁇ 1 ⁇ 2.
- the current is preferably I1 ⁇ I2.
- the current I1 of the first high-frequency electric field is preferably 0.3 to 20 mA / cm 2 , more preferably 1.0 to 20 mA / cm 2 .
- the current I2 of the second high frequency electric field is preferably 10 to 100 mA / cm 2 , more preferably 20 to 100 mA / cm 2 .
- the reactive gas G generated by the gas generator 51 is introduced into the atmospheric pressure plasma processing vessel 31 from the air supply port 52 while controlling the flow rate.
- the base material F is unwound from the original winding (not shown) and conveyed, or is conveyed from the previous process, and the air entrained by the base material by the nip roll 65 via the guide roll 64 is blocked. While being in contact with the roll rotation electrode 35, it is transferred between the roll tube electrode 36 and the square tube electrode 36, and an electric field is generated from both the roll rotation electrode (first electrode) 35 and the square tube electrode (second electrode) 36. Then, discharge plasma is generated between the counter electrodes (discharge space) 32.
- the substrate F is treated with a plasma state gas while being wound while being in contact with the roll rotating electrode 35.
- the base material F passes through the nip roll 66 and the guide roll 67 and is wound up by a winder (not shown) or transferred to the next process.
- the treated exhaust G ′ after the discharge treatment is discharged from the exhaust port 53.
- the medium whose temperature is adjusted by the electrode temperature adjusting means 60 is fed by the liquid feed pump P. It sends to both electrodes through the piping 61, and temperature is adjusted from the inside of an electrode.
- 68 and 69 are partition plates which partition the atmospheric pressure plasma processing vessel 31 and the outside world.
- Each square tube electrode 36 shown in FIG. 3 has an effect of expanding the discharge range (discharge area) as compared with the cylindrical electrode, and therefore is preferably used in the present invention.
- the distance between the opposing first electrode and second electrode is the shortest distance between the surface of the dielectric and the surface of the conductive metal base material of the other electrode. That means.
- the dielectric When the dielectric is provided on both electrodes, it means the shortest distance between the dielectric surfaces.
- the distance between the electrodes is determined in consideration of the thickness of the dielectric provided on the conductive metallic base material, the magnitude of the applied electric field strength, the purpose of using the plasma, etc. From the viewpoint of performing the above, 0.1 to 20 mm is preferable, and 0.5 to 2 mm is particularly preferable.
- the atmospheric pressure plasma processing container 31 is preferably a processing container made of Pyrex (registered trademark) glass or the like, but may be made of metal as long as it can be insulated from the electrodes.
- polyimide resin or the like may be attached to the inner surface of an aluminum or stainless steel frame, and the metal frame may be subjected to ceramic spraying to obtain insulation.
- Applied power symbol Manufacturer Frequency Product name A1 Shinko Electric 3kHz SPG3-4500 A2 Shinko Electric 5kHz SPG5-4500 A3 Kasuga Electric 15kHz AGI-023 A4 Shinko Electric 50kHz SPG50-4500 A5 HEIDEN Laboratory 100kHz * PHF-6k A6 Pearl Industry 200kHz CF-2000-200k A7 Pearl Industry 400kHz CF-2000-400k And the like, and any of them can be used.
- * indicates a HEIDEN Laboratory impulse high-frequency power source (100 kHz in continuous mode).
- an electrode capable of maintaining a uniform and stable discharge state by applying such an electric field in an atmospheric pressure plasma processing apparatus.
- the power applied between the electrodes facing each other is such that power (power density) of 1 W / cm 2 or more is supplied to the second electrode (second high-frequency electric field) to excite the discharge gas to generate plasma.
- power density power density of 1 W / cm 2 or more
- second electrode second high-frequency electric field
- the upper limit value of the power supplied to the second electrode is preferably 50 W / cm 2 , more preferably 20 W / cm 2 .
- the lower limit is preferably 1.2 W / cm 2 .
- discharge area (cm ⁇ 2 >) points out the area of the range which discharge occurs in an electrode.
- the output density is improved while maintaining the uniformity of the second high frequency electric field. be able to.
- a further uniform high-density plasma can be generated, and a further improvement in film forming speed and an improvement in film quality can be achieved.
- Preferably it is 5 W / cm 2 or more.
- the upper limit value of the power supplied to the first electrode is preferably 50 W / cm 2 .
- the waveform of the high-frequency electric field is not particularly limited.
- a continuous sine wave continuous oscillation mode called a continuous mode
- an intermittent oscillation mode called ON / OFF intermittently called a pulse mode
- the second electrode side second
- the high frequency electric field is more preferably a continuous sine wave.
- FIG. 3 is an apparatus having an electrode temperature adjusting means 60.
- the atmospheric pressure plasma processing apparatus shown in FIG. In order to obtain a uniform film quality with respect to the intermediate layer of the present application, it is preferable to perform processing while precisely controlling the temperature of the roll rotating electrode (first electrode) using the electrode temperature adjusting means 60.
- the temperature of the roll rotating electrode (first electrode) is preferably 50 ° C. or higher, more preferably 70 ° C. or higher, and most preferably 90 ° C. or higher.
- the plasma irradiation time can be controlled by the conveyance speed of the substrate F, and is appropriately adjusted according to the irradiation time.
- a preferable irradiation time is 0.1 to 100 seconds, more preferably 0.2 to 30 seconds, and most preferably 0.5 to 20 seconds.
- the dye-sensitized solar cell of the present invention has a conductive substrate having a metal current collecting grid (hereinafter also referred to as a metal current collecting layer) on a light transmissive substrate.
- a metal current collecting grid hereinafter also referred to as a metal current collecting layer
- Collector grid There is no particular limitation on the shape of the current collecting grid made of the fine metal wires, and it can be formed in a mesh shape, a stripe shape, or an arbitrary pattern. There is no particular limitation on the material of the fine metal wire, and any metal such as gold, silver, copper, platinum, aluminum, nickel, titanium, tungsten, indium, ruthenium, or an alloy containing a plurality of these, or stainless steel can be selected. Can be used. In particular, from the viewpoint of a method for producing a conductive or easy thin wire, it is also one of preferred embodiments to use gold, silver, or copper.
- the line width of the fine metal wire and the aperture ratio of the metal current collecting layer there is no particular limitation on the line width of the fine metal wire and the aperture ratio of the metal current collecting layer, and it can be arbitrarily controlled and applied.
- the line width decreases, the conductivity decreases but the aperture ratio increases, and the light transmittance as the conductive base material increases.
- the conductivity improves but the aperture ratio decreases, The light transmittance as an electroconductive base material becomes low.
- the line width of the fine metal wire is specifically preferably 5 ⁇ m or more and 20 ⁇ m or less, and more preferably 5 ⁇ m or more and 10 ⁇ m or less.
- wire width of a metal fine wire it can measure using the microscope etc. which have a ranging function.
- the aperture ratio of the metal current collecting layer is preferably 93% or more and 98% or less, and more preferably 95% or more and 98% or less.
- the aperture ratio can be calculated by analyzing an image taken with a microscope or the like and determining the area of the aperture.
- the interval between the fine metal wires is a factor that affects the aperture ratio, and can be set arbitrarily, but can usually be set in the range of 10 ⁇ m to 500 ⁇ m.
- the height of a metal fine wire when the electroconductivity and smoothness of an electroconductive base material are considered, it is preferable that they are 1 micrometer or more and 20 micrometers or less, and 5 micrometers or more and 15 micrometers or less are more preferable.
- the method for forming the fine metal wire there is no particular limitation on the method for forming the fine metal wire, vacuum deposition method, sputtering method, ion plating method, CVD method, plasma CVD method, or coating method, various printing methods, ink jet method, screen printing method, aerosol deposition method. Any method such as a silver salt method and various etching methods can be applied. Among these methods, it is preferable to apply various printing methods, inkjet methods, screen printing methods, and silver salt methods because patterning is easy.
- a photoresist is coated on a transparent substrate, pattern exposure is performed through a mask, a portion corresponding to the fine metal wire pattern of the photoresist is removed by etching, and then, for example, the metal film is formed by sputtering. After the film is uniformly formed, the photoresist can be removed by a lift-off method to form a fine metal wire.
- a metal film is uniformly formed on the substrate, and then a photoresist is coated on the metal film, and after pattern exposure through a mask, the positive portion of the resist is dissolved and removed to be exposed. A method of forming a fine metal wire by removing the metal film by etching may be used.
- a metal particle that becomes a fine metal wire and a binder such as glass fine particles are mixed to form a paste, and this is prescribed by a method such as a coating method, various printing methods, an inkjet method, a screen printing method, or the like.
- a method of coating a film so as to form a pattern examples include a method of coating a film so as to form a pattern, and fusing metal particles by heating and baking.
- the firing temperature is preferably 600 ° C. or lower.
- the electrostatic ink jet method can continuously print a high-viscosity liquid with high accuracy, and can be used for forming fine metal wires.
- a liquid discharge head having a nozzle having an internal diameter of 0.5 to 30 ⁇ m for discharging a charged liquid, supply means for supplying a solution into the nozzle, and a discharge voltage to the solution in the nozzle
- a liquid ejection device provided with ejection voltage application means for applying. According to this method, there is no thickening of the intersection of the fine metal wires, and thinning is possible.
- a method for forming a fine metal wire using such an electrostatic ink jet method for example, after applying a plating catalyst ink in a desired pattern, a method for forming a fine metal wire by electroless plating, or containing fine metal particles
- a method for forming a fine metal wire by electroless plating, or containing fine metal particles examples include applying ink or ink containing metal ions or metal complex ions and a reducing agent in a desired pattern, or applying metal ion or metal complex ion-containing ink and reducing agent-containing ink in a desired pattern from different nozzles. be able to.
- a metal fine particle-containing ink or an ink containing metal ions or metal complex ions and a reducing agent is applied in a desired pattern, or a metal ion or metal complex ion-containing ink and a reducing agent-containing ink are applied from different nozzles to a desired pattern.
- the coating method is more preferable because an additional step such as plating is unnecessary.
- the metal fine particles Since unevenness is less likely to occur on the surface of the fine metal wire than when the contained ink is used, it can be most preferably used in applications where smoothness is required.
- the viscosity of the ink used in the electrostatic ink jet method is preferably 30 mPa ⁇ s or more, and more preferably 100 mPa ⁇ s or more.
- a layer containing silver halide grains is provided on a transparent substrate, and then exposed and developed in a desired pattern to form a metallic silver portion of the desired pattern, and further physical development It is a method of forming a silver fine wire by processing.
- a decrease in aperture ratio due to thickening of the intersection which can be a problem in the printing method, is less likely to occur, and it is possible to form dense silver lines, and it is preferable to apply the silver salt method It is one of.
- the silver halide emulsion contains a binder, but the amount of binder in the layer containing the silver halide grains is 0.05 g / m 2 or more. It is preferable that it is 0.25 g / m 2 or less. Further, the Ag / binder ratio in the layer containing silver halide grains is preferably 0.3 or more and 0.8 or less by volume ratio.
- the silver halide grains are preferably silver chlorobromide grains, having a silver chloride content of 55 mol% to 95 mol% and a silver bromide content of 5 mol% to 45 mol%. Further preferred.
- JP-A-2006-352073 For details of exposure, development processing, and further physical development processing, the method described in JP-A-2006-352073 can be referred to.
- the fine metal wires may be plated or further provided with a corrosion prevention layer for preventing corrosion by the electrolyte.
- a corrosion prevention layer for preventing corrosion by the electrolyte.
- the plating treatment it can be performed under arbitrary conditions by an electrolytic plating method or an electroless plating method.
- a corrosion prevention layer it is possible to apply a metal such as titanium, nickel, aluminum, or an alloy thereof, and it is also possible to apply an amorphous or crystalline insulating layer as the corrosion prevention layer. .
- the current collecting grid is provided on a light-transmitting substrate, and the opening is covered on the current collecting grid and is covered with a transparent conductive layer.
- Transparent conductive layer As the conductive material used for this transparent conductive layer, inorganic conductive materials made of various known metals and metal oxides, polymer conductive materials, inorganic organic composite conductive materials, carbon materials, Alternatively, any material such as a conductive material in which these are arbitrarily mixed can be used.
- the transparent conductive layer of the present invention uses not only the purpose of electron injection from the semiconductor porous film, but also a material that has the effect of a protective layer that prevents corrosion of the current collecting grid by iodine redox contained in the electrolyte layer. More preferred.
- the inorganic conductive material include metals such as platinum, gold, silver, copper, zinc, titanium, aluminum, rhodium, and indium, conductive carbon, tin-doped indium oxide (ITO), and tin oxide (SnO 2 ). And metal oxides such as fluorine-doped tin oxide (FTO), antimony-doped tin oxide (ATO), zinc oxide (ZnO 2 ), and niobium-doped titanium oxide (Nb—TiO 2 ).
- metal oxide-based coatings are preferable from the viewpoint of corrosion resistance because iodine is used for the electrolyte layer because of the structure of the dye-sensitized solar cell.
- polymer-based conductive material examples include conductive polymers obtained by polymerizing thiophene, pyrrole, furan, aniline, etc., which may or may not be variously substituted, and polyacetylene. From the viewpoint of high properties, polythiophene is preferable, and polyethylenedioxythiophene (PEDOT) is particularly preferable.
- PEDOT polyethylenedioxythiophene
- a known appropriate method according to the conductive material can be used. For example, when forming a conductive layer made of a metal oxide such as ITO, a sputtering method is used. And thin film forming methods such as CVD, SPD (spray pyrolysis deposition) and vapor deposition. Moreover, when forming the electroconductive coating layer which consists of a polymer-type electroconductive material, it is preferable to form by well-known various coating methods.
- the film thickness of the conductive coating layer is preferably about 0.01 ⁇ m to 5 ⁇ m, more preferably about 0.05 ⁇ m to 2.0 ⁇ m.
- the surface resistance value of the translucent conductive substrate of the present invention is preferably 10 ⁇ / ⁇ or less, more preferably 1 ⁇ / ⁇ or less, and particularly preferably 0.5 ⁇ / ⁇ or less.
- the surface resistivity can be measured based on, for example, JIS K6911, ASTM D257, etc., and can be easily measured using a commercially available surface resistivity meter.
- Light transmissive substrate As the light-transmitting substrate used for the conductive substrate used in the dye-sensitized solar cell of the present invention, a glass plate or a resin film can be used.
- the resin film include polyesters such as polyethylene terephthalate (PET) and polyethylene naphthalate, polyolefins such as polyethylene (PE), polypropylene (PP), polystyrene and cyclic olefin resins, polyvinyl chloride, poly Vinyl resins such as vinylidene chloride, polyether ether ketone (PEEK), polysulfone (PSF), polyether sulfone (PES), polycarbonate (PC), polyamide, polyimide, acrylic resin, triacetyl cellulose (TAC), etc. are used. be able to.
- PET polyethylene terephthalate
- PP polypropylene
- PES polystyrene and cyclic olefin resins
- polyvinyl chloride poly Vinyl resins such as vinylidene chloride, polyether ether ketone (PEEK), polysulfone (PSF), polyether sulfone (PES), polycarbonate (PC), poly
- a biaxially stretched polyethylene terephthalate film, an acrylic resin film, and a triacetyl cellulose film are preferable, and a biaxially stretched polyethylene terephthalate film is preferable. Most preferred.
- the semiconductor constituting the semiconductor porous film layer according to the present invention is not particularly limited as long as it is a semiconductor that receives electrons generated by light irradiation with an adsorbed dye and transmits them to a conductive substrate.
- Various metal oxides used for type solar cells can be used.
- various metal oxide semiconductors such as titanium oxide, zirconium oxide, zinc oxide, vanadium oxide, niobium oxide, tantalum oxide, tungsten oxide, strontium titanate, calcium titanate, magnesium titanate, barium titanate, niobium
- metal oxide semiconductors such as potassium oxide and strontium tantalate, transition metal oxides such as magnesium oxide, strontium oxide, aluminum oxide, cobalt oxide, nickel oxide and manganese oxide, cerium oxide, gadolinium oxide, samarium oxide, ytterbium oxide And metal oxides such as lanthanoid oxides, and inorganic insulators such as natural or synthetic silicate compounds represented by silica.
- these materials can be used in combination.
- the metal oxide particles may have a core-shell structure or may be doped with a different metal element, and a metal oxide having an arbitrary structure and composition can be applied.
- the average particle diameter of the metal oxide particles is preferably 10 nm or more and 300 nm or less, and more preferably 10 nm or more and 100 nm or less.
- the shape of the metal oxide is not particularly limited, and may be spherical, acicular, or amorphous crystals.
- the method for forming metal oxide particles is not particularly limited, and various liquid phase methods such as hydrothermal reaction method, sol-gel method / gel sol method, colloid chemical synthesis method, coating pyrolysis method, spray pyrolysis method, and chemical vapor phase It can be formed using various gas phase methods such as a precipitation method.
- a known method can be applied.
- (1) Suspension containing metal oxide fine particles or a precursor thereof (2) A method for forming a semiconductor layer by drying and baking, and (2) immersing the conductive substrate in a colloidal solution and subjecting the metal oxide semiconductor particles to a conductive group by electrophoresis.
- Electrophoretic electrodeposition method that adheres to the material, (3) A method in which a colloidal solution or dispersion is mixed and applied with a foaming agent, and then sintered to make it porous.
- a polymer microbead is mixed and applied. Then, a method of removing the polymer microbeads by heat treatment or chemical treatment to form voids and making it porous can be applied.
- a known method can be applied particularly as a coating method, and examples thereof include a screen printing method, an ink jet method, a roll coating method, a doctor blade method, a spin coating method, and a spray coating method. Can do.
- the particle diameter of the metal oxide fine particles in the suspension is preferably fine and is preferably present as primary particles.
- the suspension containing the metal oxide fine particles is prepared by dispersing the metal oxide fine particles in a solvent, and the solvent is not particularly limited as long as the metal oxide fine particles can be dispersed, and water, Organic solvents, mixtures of water and organic solvents are included.
- the organic solvent alcohols such as methanol and ethanol, ketones such as methyl ethyl ketone, acetone and acetyl acetone, hydrocarbons such as hexane and cyclohexane, and the like are used.
- a surfactant and a viscosity modifier can be added to the suspension as necessary.
- concentration range of the metal oxide fine particles in the solvent is preferably 0.1 to 70% by mass, and more preferably 0.1 to 30% by mass.
- the suspension containing the metal oxide core fine particles obtained as described above is applied onto a conductive substrate, dried, etc., and then baked in air or in an inert gas to be conductive.
- a metal oxide semiconductor layer is formed on the conductive substrate.
- the semiconductor layer obtained by applying and drying the suspension on the conductive substrate is composed of an aggregate of metal oxide fine particles, and the particle size of the fine particles corresponds to the primary particle size of the metal oxide fine particles used. To do. Since the metal oxide semiconductor layer formed on the conductive base material has low bonding strength with the conductive base material and fine particles, and the mechanical strength is low, this metal oxide fine particle assembly
- the body film is preferably fired to increase the mechanical strength, and is preferably a fired product film that is strongly fixed to the substrate.
- the metal oxide semiconductor layer may have any structure, but is preferably a porous structure film (also referred to as a porous layer having voids).
- the porosity of the metal oxide semiconductor layer is preferably 0.1 to 20% by volume, and more preferably 5 to 20% by volume.
- the porosity of the metal oxide semiconductor layer means a porosity that is penetrating in the thickness direction of the dielectric, and can be measured using a commercially available apparatus such as a mercury porosimeter (Shimadzu porer 9220 type).
- the thickness of the metal oxide semiconductor layer is preferably at least 10 nm or more, more preferably 100 to 10,000 nm.
- the firing temperature is preferably lower than 1000 ° C., and more preferably in the range of 200 to 800 ° C. preferable.
- the metal oxide semiconductor layer is formed on the metal oxide intermediate layer as described above, the metal oxide semiconductor layer is formed on the metal oxide semiconductor film as necessary for the purpose of improving electronic conductivity. May be subjected to a surface treatment with a metal oxide.
- the surface treatment composition is preferably the same type of composition as that of the metal oxide forming the metal oxide semiconductor layer, particularly from the viewpoint of electron conductivity between the metal oxide fine particles.
- a metal oxide precursor to be surface treated is applied to the semiconductor film, or the semiconductor film is a precursor.
- a surface treatment made of a metal oxide can be performed by immersing in a body solution and further performing a firing treatment as necessary.
- the surface treatment is performed by using an electrochemical treatment using a titanium tetrachloride aqueous solution or titanium alkoxide which is a precursor of titanium oxide, or using a precursor of an alkali metal titanate or an alkaline earth titanate metal.
- the firing temperature and firing time at this time are not particularly limited and can be arbitrarily controlled, but are preferably 200 ° C. or lower.
- the dye adsorbed on the surface of the metal oxide semiconductor layer described above has absorption in various visible light regions or infrared light regions, and has a lowest vacancy level higher than the conduction band of the metal oxide semiconductor.
- dyes can be used.
- azo dyes for example, azo dyes, quinone dyes, quinone imine dyes, quinacridone dyes, squarylium dyes, cyanine dyes, cyanidin dyes, merocyanine dyes, triphenylmethane dyes, xanthene dyes, porphyrin dyes, perylene dyes
- examples thereof include dyes, indigo dyes, phthalocyanine dyes, naphthalocyanine dyes, rhodamine dyes, rhodanine dyes, and the like.
- Metal complex dyes are also preferably used.
- Various metals such as Tc, Te, and Rh can be used.
- polymethine dyes such as cyanine dyes, merocyanine dyes, and squarylium dyes are one of the preferred embodiments.
- JP-A-11-35836, JP-A-11-67285, JP-A-11- No. 86916, JP-A-11-97725, JP-A-11-158395, JP-A-11-163378, JP-A-11-214730, JP-A-11-214731, JP-A-11-238905 examples thereof include dyes described in each specification such as JP-A No. 2004-207224, JP-A No. 2004-319202, EP-A 892411, and U.S. Pat.
- a metal complex dye is also one preferred embodiment, and a metal phthalocyanine dye, a metal porphyrin dye or a ruthenium complex dye is preferable, and a ruthenium complex dye is particularly preferable.
- ruthenium complex dyes include U.S. Pat. Nos. 4,927,721, 4,684,537, 5,084,365, 5,350,644, No. 5,463,057, No. 5,525,440, JP-A-7-249790, JP-A-10-504512, WO98 / 50393, JP2000- Examples include complex dyes described in Japanese Patent No. 26487, Japanese Patent Application Laid-Open No. 2001-223037, Japanese Patent Application Laid-Open No. 2001-226607, Japanese Patent No. 3430254, and the like.
- These dyes preferably have a large extinction coefficient and are stable against repeated redox reactions.
- the dye (compound) is preferably chemically adsorbed on the metal oxide semiconductor, and has a functional group such as a carboxy group, a sulfonic acid group, a phosphoric acid group, an amide group, an amino group, a carbonyl group, or a phosphine group. It is preferable to have.
- two or more kinds of dyes can be used together or mixed.
- the dye to be used or mixed and the ratio thereof can be selected so as to match the wavelength range and intensity distribution of the target light source.
- the charge transfer layer is a layer containing a charge transport material having a function of replenishing electrons to the oxidant of the dye.
- charge transport materials that can be used in the present invention include a solvent in which a redox counter ion is dissolved, an electrolytic solution such as a room temperature molten salt containing the redox counter ion, and a solution of the redox counter ion as a polymer. Examples thereof include a gel-like quasi-solidified electrolyte impregnated with a matrix, a low-molecular gelling agent, and the like, and a polymer solid electrolyte.
- electron transport materials and hole transport materials can also be used as materials whose carrier transport in solids is involved in electrical conduction, and these can be used in combination. Is possible.
- the redox counter ion contained is not particularly limited as long as it can be used in a generally known solar cell or the like.
- a redox counter ion such as I ⁇ / I 3 ⁇ series, Br 2 ⁇ / Br 3 ⁇ series, ferrocyanate / ferricyanate, ferrocene / ferricinium ion, cobalt Metal redox systems such as metal complexes such as complexes, organic redox systems such as alkylthiol-alkyldisulfides, viologen dyes, hydroquinones / quinones, sulfur compounds such as sodium polysulfide, alkylthiols / alkyldisulfides, etc. .
- iodine More specifically as iodine, iodine and LiI, NaI, KI, CsI, a combination of a metal iodide such as CaI 2, tetraalkylammonium iodide, pyridinium iodide, quaternary ammonium compounds such as imidazolium iodide And combinations with iodine salts of quaternary imidazolium compounds.
- a metal iodide such as CaI 2
- tetraalkylammonium iodide pyridinium iodide
- quaternary ammonium compounds such as imidazolium iodide
- combinations with iodine salts of quaternary imidazolium compounds quaternary imidazolium compounds.
- bromine-based combinations of bromine and metal bromides such as LiBr, NaBr, KBr, CsBr, and CaBr 2
- quaternary ammonium compounds such as tetraalkylammonium bromide and pyridinium bromide, etc.
- a solvent As a solvent, it is an electrochemically inert compound that has low viscosity and improved ion mobility, or has a high dielectric constant and improved effective carrier concentration, and can exhibit excellent ionic conductivity. Is desirable.
- carbonate compounds such as dimethyl carbonate, diethyl carbonate, ethylene carbonate and propylene carbonate, heterocyclic compounds such as 3-methyl-2-oxazolidinone, ether compounds such as dioxane and diethyl ether, ethylene glycol dialkyl ether, propylene glycol dialkyl Ethers, chain ethers such as polyethylene glycol dialkyl ether, polypropylene glycol dialkyl ether, alcohols such as methanol, ethanol, ethylene glycol monoalkyl ether, propylene glycol monoalkyl ether, polyethylene glycol monoalkyl ether, polypropylene glycol monoalkyl ether, Ethylene glycol, diethylene glycol, triethyl Polyhydric alcohols such as ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol and glycerin, nitrile compounds such as acetonitrile, glutarodinitrile, propionitrile, methyl
- a preferable electrolyte concentration is 0.1 to 15M, and more preferably 0.2 to 10M.
- a preferable concentration of iodine is 0.01 to 0.5M.
- the molten salt electrolyte is preferable from the viewpoint of achieving both photoelectric conversion efficiency and durability.
- the molten salt electrolyte for example, International Publication No. 95/18456 pamphlet, JP-A-8-259543, JP-A-2001-357896, Electrochemistry, Vol. 65, No. 11, page 923 (1997).
- electrolytes containing known iodine salts such as pyridinium salts, imidazolium salts, and triazolium salts described in the above.
- These molten salt electrolytes are preferably in a molten state at room temperature, and it is preferable not to use a solvent.
- polyacrylonitrile and polyvinylidene fluoride can be preferably used.
- a preferred compound is a compound having an amide structure in the molecular structure.
- preferred crosslinkable reactive groups are nitrogen-containing heterocycles (for example, pyridine ring, imidazole ring, thiazole ring, oxazole ring, triazole ring, morpholine ring, piperidine ring, piperazine ring, etc.), and preferred crosslinking agents Is a bifunctional or more functional reagent (for example, alkyl halide, halogenated aralkyl, sulfonate, acid anhydride, acid chloride, isocyanate, etc.) capable of electrophilic reaction with a nitrogen atom.
- the concentration of the electrolyte is usually 0.01 to 99% by mass, preferably about 0.1 to 90% by mass.
- an electrolyte composition containing an electrolyte and metal oxide particles and / or conductive particles can also be used.
- the metal oxide particles TiO 2 , SnO 2 , WO 3 , ZnO, ITO, BaTiO 3 , Nb 2 O 5 , In 2 O 3 , ZrO 2 , Ta 2 O 5 , La 2 O 3 , SrTiO 3 , Y
- examples thereof include one or a mixture of two or more selected from the group consisting of 2 O 3 , Ho 2 O 3 , Bi 2 O 3 , CeO 2 , and Al 2 O 3 . These may be doped with impurities or complex oxides.
- the conductive particles include those made of a substance mainly composed of carbon.
- the polymer electrolyte is a solid substance capable of dissolving the redox species or binding with at least one substance constituting the redox species, for example, polyethylene oxide, polypropylene oxide, polyethylene succinate, A polymer compound such as poly- ⁇ -propiolactone, polyethyleneimine, polyalkylene sulfide or a cross-linked product thereof, polyphosphazene, polysiloxane, polyvinyl alcohol, polyacrylic acid, polyalkylene oxide, Examples include those obtained by adding an ether segment or oligoalkylene oxide structure as a side chain, or a copolymer thereof. Among them, those having an oligoalkylene oxide structure as a side chain or having a polyether segment as a side chain are included. It is preferred.
- a method of polymerizing in the coexistence of a monomer that becomes a polymer compound and a redox species a solid such as a polymer compound is dissolved in a solvent as necessary. Then, the above-mentioned method of adding the redox species can be used.
- the content of the redox species can be appropriately selected according to the required ion conduction performance.
- Organic hole transport materials include aromatic amines and triphenylene derivatives, polyacetylene and its derivatives, poly (p-phenylene) and its derivatives, poly (p-phenylene vinylene) and its derivatives, polythienylene vinylene and its derivatives Conductive polymers such as derivatives, polythiophene and derivatives thereof, polyaniline and derivatives thereof, polytoluidine and derivatives thereof can be preferably used.
- the hole transport material may be added with a compound containing a cation radical such as tris (4-bromophenyl) aminium hexachloroantimonate, or the potential control of the oxide semiconductor surface ( A salt such as Li [(CF 3 SO 2 ) 2 N] may be added in order to perform compensation of the space charge layer.
- a p-type inorganic compound semiconductor can be used as the inorganic hole transport material.
- the p-type inorganic compound semiconductor for this purpose preferably has a band gap of 2 eV or more, and more preferably 2.5 eV or more. Also, the ionization potential of the p-type inorganic compound semiconductor needs to be smaller than the ionization potential of the dye-adsorbing electrode from the condition that the holes of the dye can be reduced. Although the preferred range of the ionization potential of the p-type inorganic compound semiconductor varies depending on the dye used, it is generally preferably 4.5 to 5.5 eV, more preferably 4.7 to 5.3 eV.
- a preferred p-type inorganic compound semiconductor is a compound semiconductor containing monovalent copper, CuI and CuSCN are preferred, and CuI is most preferred.
- the preferred hole mobility of the charge transfer layer containing the p-type inorganic compound semiconductor is 10 ⁇ 4 to 10 4 m 2 / V ⁇ sec, and more preferably 10 ⁇ 3 to 10 3 cm 2 / V ⁇ sec.
- the preferred conductivity of the charge transfer layer is 10 ⁇ 8 to 10 2 S / cm, more preferably 10 ⁇ 6 to 10 S / cm.
- the method for forming the charge transfer layer between the semiconductor electrode and the counter electrode is not particularly limited.
- the charge transfer layer is formed by filling the electrolyte solution or various electrolytes described above to form a charge transfer layer, or by dropping or coating the electrolyte or various electrolytes on the semiconductor electrode or the counter electrode.
- a method of overlaying the other electrode on the top can be used.
- the gap between the semiconductor electrode and the counter electrode is sealed with a film or resin as necessary, or the semiconductor electrode and the charge transfer It is also preferable to store the layer and the counter electrode in a suitable case.
- a normal pressure process using capillary action by dipping or the like, or a vacuum process in which the gas phase in the gap is replaced with a liquid phase at a pressure lower than normal pressure can be used.
- microgravure coating, dip coating, screen coating, spin coating or the like can be used as a coating method.
- the counter electrode is provided in an undried state and measures for preventing liquid leakage at the edge portion are taken.
- a gel electrolyte there is a method in which it is applied in a wet manner and solidified by a method such as polymerization. In this case, the counter electrode can be applied after drying and fixing.
- a charge transfer layer can be formed by a dry film forming process such as a vacuum deposition method or a CVD method, and then a counter electrode can be provided. Specifically, it can be introduced into the electrode by techniques such as vacuum deposition, casting, coating, spin coating, dipping, electropolymerization, and photoelectropolymerization. It is formed by evaporating the solvent by heating to an arbitrary temperature.
- the thickness of the charge transfer layer is preferably 10 ⁇ m or less, more preferably 5 ⁇ m or less, and further preferably 1 ⁇ m or less.
- the electric conductivity of the charge transfer layer is preferably 1 ⁇ 10 ⁇ 10 S / cm or more, and more preferably 1 ⁇ 10 ⁇ 5 S / cm or more.
- the cathode electrode (counter electrode) that can be used in the present invention utilizes a single-layer structure of a substrate having conductivity itself, or a substrate having a conductive layer on the surface thereof, as with the conductive substrate described above. be able to.
- the conductive material and substrate used for the conductive layer, and the production method thereof are the same as in the case of the conductive substrate described above, and various known materials and methods can be applied.
- a material having a catalytic ability to cause oxidation of I 3 ⁇ ions or the like and reduction reaction of other redox ions at a sufficiently high speed is preferable to use.
- a platinum electrode or a conductive material surface is used. Examples include platinum-plated or platinum-deposited materials, rhodium metal, ruthenium metal, ruthenium oxide, and carbon.
- the thickness of the conductive layer to be the cathode electrode is not particularly limited, but is preferably 3 nm to 10 ⁇ m. When the conductive layer is a metal, the thickness is preferably 5 ⁇ m or less, and more preferably in the range of 10 nm to 3 ⁇ m.
- the surface resistance of the counter electrode is preferably as low as possible. Specifically, the range of the surface resistance is preferably 50 ⁇ / ⁇ or less, more preferably 20 ⁇ / ⁇ or less, and even more preferably 10 ⁇ / ⁇ or less. .
- the cathode electrode Since light may be received from one or both of the conductive base material and the cathode electrode described above, it is sufficient that at least one of the conductive base material and the cathode electrode is substantially transparent. From the viewpoint of improving the power generation efficiency, it is preferable to make the conductive base material transparent so that light enters from the conductive base material side.
- the cathode electrode preferably has a property of reflecting light. As such a cathode electrode, glass or plastic deposited with a metal or a conductive oxide, or a metal thin film can be used.
- a conductive material is directly applied, plated, or vapor deposited (PVD, CVD) on the above-described charge transfer layer, or a conductive layer side of a base material having a counter electrode conductive layer or a single conductive base material layer is pasted. That's fine.
- PVD vapor deposited
- CVD vapor deposited
- the counter electrode is preferably conductive and has a catalytic action on the reduction reaction of the redox electrolyte.
- glass or a polymer film obtained by depositing platinum, carbon, rhodium, ruthenium, or the like, or those coated with conductive fine particles can be used.
- the produced precipitate is taken out by decantation and washed with distilled water many times.
- Silver nitrate is added dropwise to distilled water in which the precipitate has been washed, and after confirming that there is no reaction of chlorine ions, distilled water is added to the washed precipitate to make a total volume of 2000 ml.
- 40 ml of 30% aqueous ammonia was added and heated to obtain a uniform sol.
- the solution was concentrated by heating until the solid content concentration of SnO 2 reached 8.3 mass%, to obtain SnO 2 sol (A).
- a hardening agent tetrakis (vinylsulfonylmethyl) methane
- a surfactant di (2-ethylhexyl) sulfosuccinate / sodium
- the amount of gelatin was adjusted so that the volume ratio of silver to gelatin was 0.5.
- the volume ratio of silver and gelatin as used herein refers to a value obtained by dividing the volume of silver halide fine particles applied by the volume of gelatin applied.
- Translucent Conductive Substrate S101 The photosensitive material 101 produced as described above was exposed using an ultraviolet lamp through a lattice-like photomask having a line width of 8 ⁇ m and an interval between lines of 250 ⁇ m. Next, after developing for 30 seconds at 35 ° C. using the following developer (DEV-1), fixing processing is performed for 60 seconds at 35 ° C. using the following fixing solution (FIX-1). Washing with water was performed. Further, physical development was performed at 30 ° C. for 5 minutes using the following physical developer (PD-1), followed by washing with water.
- DEV-1 developer
- FIX-1 fixing solution
- the sample was cut into a size of 300 mm ⁇ 300 mm, immersed in a plating solution (EPL-1), and subjected to electrolytic copper plating at 25 ° C.
- the electrolytic copper plating was performed by adjusting the applied current and the treatment time until the line width became 13.5 ⁇ m, and washed with water and dried to obtain a plated current collector substrate.
- FIX-1 Fixer 750 ml of pure water Sodium thiosulfate 250g Anhydrous sodium sulfite 15g Glacial acetic acid 15ml Potash alum 15g Add water to bring the total volume to 1L.
- EPL-1 Electrolytic plating solution
- Copper sulfate (pentahydrate) 200g 50g of sulfuric acid Sodium chloride 0.1g Add water to bring the total volume to 1L.
- a high-frequency magnetron sputtering apparatus is used to form a conductive coating layer on the current collecting grid and on the opening so as to have a film thickness of 100 nm.
- a substrate S101 was produced.
- the light-transmitting conductive substrate S101 was prepared in such a manner that a conductive coating layer was formed and a titanium oxide plate was used as a target material and a high-frequency magnetron sputtering apparatus was used to form a 15 nm thick intermediate layer. S102 was produced in the same manner as the conductive conductive substrate S101.
- Translucent Conductive Substrate S103 In the production of the translucent conductive substrate S102, S103 was produced in the same manner as the translucent conductive substrate S101 except that the thickness of the intermediate layer was 80 nm.
- Translucent Conductive Substrate S104 In the production of the light-transmitting conductive substrate S102, S104 was prepared in the same manner as the light-transmitting conductive substrate S101 except that the thickness of the intermediate layer was 120 nm.
- Translucent Conductive Substrate S105 In the production of the translucent conductive substrate S101, a conductive coating layer is formed, and then a 15 nm thick intermediate layer is formed under the following plasma processing condition 1 using a plasma CVD apparatus as shown in FIG. S105 was fabricated in the same manner as the light-transmitting conductive substrate S101 except for the above.
- the first power source 21 was Heiden Laboratories PHF-6k (100 kHz), and the second electrode 22 was Pearl Industrial CF-5000-13M (13.56 MHz).
- Discharge gas Nitrogen gas 94.9% by volume
- Intermediate layer forming gas tetraisopropoxy titanium 0.1% by volume
- Additive gas Oxygen gas 5.0% by volume
- Vaporization temperature 30 ° C
- Electrode temperature 90 ° C
- S106 was produced in the same manner as the translucent conductive substrate S105 except that an intermediate layer having a thickness of 80 nm was formed.
- Translucent Conductive Substrate S107 In the production of the translucent conductive substrate S105, S107 was produced in the same manner as the translucent conductive substrate S105 except that an intermediate layer having a thickness of 120 nm was formed.
- Translucent Conductive Substrate S108 In the production of the translucent conductive substrate S101, the substrate on which the conductive coating layer is formed is immersed in a 40 mM aqueous solution of tetrachlorotitanium (TiCl 4 ) at 70 ° C. for 30 minutes, and subsequently dried at 120 ° C. for 10 minutes. S108 was produced in the same manner as the light-transmitting conductive substrate S101 except that a 15 nm thick intermediate layer was formed.
- TiCl 4 tetrachlorotitanium
- Translucent Conductive Substrate S109 In the production of the translucent conductive substrate S108, the substrate on which the conductive coating layer was formed was immersed in a 40 mM aqueous solution of tetrachlorotitanium (TiCl 4 ) at 70 ° C. for 30 minutes and dried at 120 ° C. for 10 minutes. Further, S109 was fabricated in the same manner as the light-transmitting conductive substrate S101 except that a 15 nm-thick intermediate layer was formed by plasma treatment under the following plasma treatment condition 2.
- a conductive coating layer was formed, and a 120 nm thick intermediate layer was formed using a high-frequency magnetron sputtering apparatus with a titanium oxide plate as a target material, thereby producing a translucent conductive substrate S110.
- the PEN film formed with the conductive layer before forming the intermediate layer exhibited a water vapor permeability of 500 g / (m 2 ⁇ 24 h) or more.
- a titanium oxide paste for low-temperature sintering (Ti-Nanoxide-TL manufactured by SOLARONIX) was printed on the light-transmitting conductive substrate S101 using a screen printer.
- the layer of titanium oxide paste was prepared by overprinting using a screen printing method so that the film thickness was about 12 ⁇ m. After natural drying, drying at 120 ° C. is performed for 30 minutes, and the periphery of the formed semiconductor porous film is cut to 50 mm ⁇ 50 mm (effective area 25 cm 2 ), and the transparent conductive substrate S101 is formed on the transparent conductive substrate S101.
- a porous semiconductor membrane layer made of titanium oxide was formed on the substrate.
- the cathode counter electrode As the cathode counter electrode, a titanium foil having a thickness of 200 ⁇ m was used, and the surface thereof was covered with a platinum layer having a thickness of 2 nm by a magnetron sputtering apparatus. The counter electrode was provided with a hole for injecting an electrolyte.
- the anode electrode and the cathode counter electrode are bonded using a sheet spacer / sealing material (SX-1170-25 manufactured by SOLARONIX) having a thickness of 60 ⁇ m with a 60 mm square hole, and an electrolytic solution provided on the cathode electrode From the injection hole, dehydrated methoxypropionitrile (MPN) as a solvent, lithium iodide, iodine, 1,2-dimethyl-3-propylimidazolium iodide, and t-butylpyridine each having a concentration of 0.1
- a charge transfer layer containing a redox electrolyte dissolved so as to be mol / L, 0.05 mol / L, 0.6 mol / L, and 0.5 mol / L is injected, and the sealing agent is used from above.
- a dye-sensitized solar cell SC-101 was produced by laminating an antireflection film (hard coat / antireflection type cellulose film made by Konica Minolta Opto) on the light receiving surface side of the base material having the metal oxide semiconductor layer.
- an antireflection film hard coat / antireflection type cellulose film made by Konica Minolta Opto
- SC-102 to SC-111 were fabricated in the same manner as the SC-101 except that S102 to S111 were used instead of the translucent conductive substrate S101 in the SC-101 fabrication method described above.
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Abstract
Description
最初に、本発明の色素増感型太陽電池について、図1を用いて説明する。図1は、本発明の色素増感型太陽電池の基本構造を示す概略断面図である。本発明の色素増感型太陽電池は図1によって示される通り、導電性基材として透明基材5a上に金属集電層(集電グリッド)1aおよびここでは好ましい形態として透明導電性層1を有し、その上に金属酸化物中間層6、表面に色素を吸着させた半導体膜から構成される金属酸化物半導体層(半導体多孔質膜層)2、を積層したアノード電極、電荷移動層(「電解質層」と呼ぶこともある)3、を順次有し、さらに対向電極(カソード電極)として、基材5の表面に導電性層4を有する構成である。
本発明の色素増感型太陽電池は、金属製の集電グリッド(以下金属集電層ともいう)を含む導電性基材(以下、導電層ともいう)と金属酸化物半導体層(半導体多孔質膜層)との間に、水蒸気透過度が0.1g/(m2・24h)以下である中間層を有することが特徴である。
(1)予め導電性基材を金属化合物の溶液に浸漬し、乾燥工程を経て、酸素を含むプラズマ中で処理し中間層を形成させる方法、
(2)導電性基材に、金属化合物ガスと酸素を含むガスによりプラズマをつくり、吹き付けることで中間層を形成する方法を挙げることができる。
(1)では、金属化合物の希薄溶液に浸漬させることで、導電性基材の表面を反応性のゾルで被覆し、酸素ラジカルを含むプラズマ照射を行うことで、導電性基材表面に均一なコート層を極短時間に形成することができる。
上記一般式において、Mは金属(例えば、Li、Be、B、Na、Mg、Al、Si、K、Ca、Sc、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Ga、Ge、Rb、Sr、Y、Zr、Nb、Mo、Cd、In、Ir、Sn、Sb、Cs、Ba、La、Hf、Ta、W、Tl、Pb、Bi、Ce、Pr、Nd、Pm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu等)を表し、R1はアルキル基、R2はアルコキシ基、R3はβ-ジケトン配位基、β-ケトカルボン酸エステル配位基、β-ケトカルボン酸配位基およびケトオキシ基(ケトオキシ配位基)から選ばれる基であり、金属Mの価数をmとした場合、x+y+z=mであり、x=0~m、またはx=0~m-1であり、y=0~m、z=0~mで、いずれも0または正の整数である。
印加電源記号 メーカー 周波数 製品名
A1 神鋼電機 3kHz SPG3-4500
A2 神鋼電機 5kHz SPG5-4500
A3 春日電機 15kHz AGI-023
A4 神鋼電機 50kHz SPG50-4500
A5 ハイデン研究所 100kHz* PHF-6k
A6 パール工業 200kHz CF-2000-200k
A7 パール工業 400kHz CF-2000-400k
等の市販のものを挙げることができ、いずれも使用することができる。
印加電源記号 メーカー 周波数 製品名
B1 パール工業 800kHz CF-2000-800k
B2 パール工業 2MHz CF-2000-2M
B3 パール工業 13.56MHz CF-5000-13M
B4 パール工業 27MHz CF-2000-27M
B5 パール工業 150MHz CF-2000-150M
等の市販のものを挙げることができ、いずれも好ましく使用できる。
本発明の色素増感型太陽電池は、光透過性の基材上に金属製の集電グリッド(以下、金属集電層ともいう)を有する導電性基材を有している。
金属細線からなる集電グリッドの形状に特に限定はなく、網目状、ストライプ状、または任意のパターンにより形成することが可能である。金属細線の材質に特に限定はなく、金、銀、銅、白金、アルミニウム、ニッケル、チタン、タングステン、インジウム、ルテニウムなどの金属、または、これらを複数種類含有する合金や、ステンレスなど任意に選択して使用することが可能である。特に導電性または細線の容易な製法の観点から、特に金、銀、銅を用いることも好ましい態様の一つである。
この透明導電性層に使用する導電性材料としては、公知種々の金属や金属酸化物等からなる無機系導電性材料、ポリマー系導電性材料、無機有機複合型の導電性材料、カーボン系材料、またはこれらを任意に混合した導電性材料など、あらゆるものを使用することができる。本発明の透明導電層は、半導体多孔質膜から電子注入される目的だけでなく、電解質層に含まれるヨウ素レドックスによる集電グリッドの腐食を防止する保護層の効果も併せもつ材料を用いることがより好ましい。
本発明の色素増感型太陽電池で用いられる導電性基材に使用される光透過性基材としては、ガラス板や樹脂フィルムを使用することができる。
本発明に係る半導体多孔質膜層について説明する。
本発明に用いられる色素について説明する。
電荷移動層は、色素の酸化体に電子を補充する機能を有する電荷輸送材料を含有する層である。本発明で用いることのできる代表的な電荷輸送材料の例としては、酸化還元対イオンが溶解した溶剤や酸化還元対イオンを含有する常温溶融塩等の電解液、酸化還元対イオンの溶液をポリマーマトリクスや低分子ゲル化剤等に含浸したゲル状の擬固体化電解質、さらには高分子固体電解質等が挙げられる。また、イオンが関わる電荷輸送材料の他に、固体中のキャリア移動が電気伝導に関わる材料として、電子輸送材料や正孔(ホール)輸送材料を挙げることもでき、これらは併用してすることも可能である。
また、半導体電極と対向電極との間から電解質が漏れ出さないようにするため、必要に応じて半導体電極と対向電極との隙間にフィルムや樹脂を用いて封止したり、半導体電極と電荷移動層と対向電極を適当なケースに収納したりすることも好ましい。
本発明で使用できるカソード電極(対向電極)は、前述した導電性基材と同様に、それ自体が導電性を有する基材の単層構造、またはその表面に導電層を有する基材を利用することができる。後者の場合、導電層に用いる導電性材料、基材、さらにその製造方法としては、前述した導電性基材の場合と同様で、公知の種々の材料および方法を適用することができる。
〔下引層形成〕
200μm厚の二軸延伸PEN支持体の片面に12W・min/m2のコロナ放電処理を施し、下引塗布液B-1を乾燥膜厚0.1μmになるように塗布し、その上に12W・min/m2のコロナ放電処理を施し、下引塗布液B-2を乾燥膜厚0.06μmになるように塗布した。その後、120℃で1.5分の熱処理を実施し、下引済みPENフィルム支持体(Base1)を得た。
スチレン20質量部、グリシジルメタクリレート40質量部、ブチルアクリレート40質量部の共重合体ラテックス液(固形分質量30%) 50g
SnO2ゾル(A) 440g
化合物(UL-1) 0.2g
水で仕上げる 1000ml
〈下引塗布液B-2〉
ゼラチン 10g
化合物(UL-1) 0.2g
化合物(UL-2) 0.2g
シリカ粒子(平均粒径3μm) 0.1g
硬膜剤(UL-3) 1g
水で仕上げる 1000ml
SnO2ゾル(A)の調製
65gのSnCl4・5H2Oを蒸留水2000mlに溶解して均一溶液とし、次いでこれを煮沸し、沈澱物を得た。生成した沈澱物をデカンテーションにより取り出し、蒸留水にて何度も水洗する。沈澱を水洗した蒸留水中に硝酸銀を滴下し、塩素イオンの反応がないことを確認後、洗浄した沈澱物に蒸留水を添加し全量を2000mlとする。これに30%アンモニア水40mlを加え加温することにより、均一なゾルを得た。さらにアンモニア水を添加しながら、SnO2の固形分濃度が8.3質量%になるまで加熱濃縮し、SnO2ゾル(A)を得た。
反応容器内で下記溶液-Aを34℃に保ち、特開昭62-160128号公報記載の混合撹拌装置を用いて高速に撹拌しながら、硝酸(濃度6%)を用いてpHを2.95に調整した。引き続き、ダブルジェット法を用いて下記(溶液-B)と下記(溶液-C)を一定の流量で8分6秒間かけて添加した。添加終了後に、炭酸ナトリウム(濃度5%)を用いてpHを5.90に調整し、続いて下記(溶液-D)と(溶液-E)を添加した。
アルカリ処理不活性ゼラチン(平均分子量10万) 18.7g
塩化ナトリウム 0.31g
下記(溶液-I) 1.59ml
純水 1246ml
(溶液-B)
硝酸銀 169.9g
硝酸(濃度6%) 5.89ml
純水にて317.1mlに仕上げる。
アルカリ処理不活性ゼラチン(平均分子量10万) 5.66g
塩化ナトリウム 58.8g
臭化カリウム 13.3g
下記(溶液-I) 0.85ml
下記(溶液-II) 2.72ml
純水にて317.1mlに仕上げる。
2-メチル-4ヒドロキシ-1,3,3a,7-テトラアザインデン
0.56g
純水 112.1ml
(溶液-E)
アルカリ処理不活性ゼラチン(平均分子量10万) 3.96g
下記(溶液-I) 0.40ml
純水 128.5ml
(溶液-I)
界面活性剤:ポリイソプロピレンポリエチレンオキシジコハク酸エステルナトリウム塩の10質量%メタノール溶液
(溶液-II)
六塩化ロジウム錯体の10質量%水溶液。
アルカリ処理不活性ゼラチン(平均分子量10万) 16.5g
純水 139.8ml
〔感光材料101の作製〕
上述のように下引層を施したBase1上に、前述のように調製したハロゲン化銀微粒子乳剤EMP-1を、塗布銀量が銀換算で0.8g/m2となるように塗布を行った後、乾燥して、感光材料101を作製した。
上述のようにして作製した感光材料101に対して、ライン幅が8μm、ライン同士の間隔が250μmの格子状のフォトマスクを介して、紫外線ランプを用いて露光を行った。次いで、下記現像液(DEV-1)を用いて35℃で30秒間現像処理を行った後、下記定着液(FIX-1)を用いて35℃で60秒間の定着処理を行い、それに続けて水洗処理を行った。さらに下記物理現像液(PD-1)を用いて、30℃5分間の物理現像を行い、次いで水洗処理を行った。その後、試料を300mm×300mmサイズにカットし、メッキ液(EPL-1)に浸漬し、25℃で電解銅メッキ処理を行った。電解銅メッキは印加電流および処理時間を調整し、線幅が13.5μmになるまで処理し、水洗および乾燥を行いメッキ被覆された集電線基板を得た。
純水 500ml
メトール 2g
無水亜硫酸ナトリウム 80g
ハイドロキノン 4g
ホウ砂 4g
チオ硫酸ナトリウム 10g
臭化カリウム 0.5g
水を加えて全量を1Lとする。
純水 750ml
チオ硫酸ナトリウム 250g
無水亜硫酸ナトリウム 15g
氷酢酸 15ml
カリミョウバン 15g
水を加えて全量を1Lとする。
純水 800ml
クエン酸 31g
ハイドロキノン 7.8g
リン酸水素二ナトリウム 1.1g
アンモニア水(28%) 2.2ml
硝酸銀 1.5g
水を加えて全量を1Lとする。
硫酸銅(五水和物) 200g
硫酸 50g
塩化ナトリウム 0.1g
水を加えて全量を1Lとする。
前記透光性導電性基板S101の作製において、導電性被覆層を形成した上に、酸化チタン板をターゲット材に高周波マグネトロンスパッタ装置を用い、15nm厚の中間層を形成させた以外は前記透光性導電性基板S101と同様にしてS102を作製した。
前記透光性導電性基板S102の作製において、中間層の膜厚を80nm厚にした以外は前記透光性導電性基板S101と同様にしてS103を作製した。
前記透光性導電性基板S102の作製において、中間層の膜厚を120nm厚にした以外は前記透光性導電性基板S101と同様にしてS104を作製した。
前記透光性導電性基板S101の作製において、導電性被覆層を形成した上に、図2で示したようなプラズマCVD装置を用い、下記プラズマ処理条件1にて15nm厚の中間層を形成させた以外は前記透光性導電性基板S101と同様にしてS105を作製した。
図2中21の第1電源にはハイデン研究所PHF-6k(100kHz)を用い、また22の第2電極にはパール工業CF-5000-13M(13.56MHz)を用いた。
放電ガス:窒素ガス 94.9体積%
中間層形成性ガス:テトライソプロポキシチタン 0.1体積%
添加ガス:酸素ガス 5.0体積%
気化温度:30℃
電極温度:90℃
〔透光性導電性基板S106の作製〕
前記透光性導電性基板S105の作製において、80nm厚の中間層を形成させた以外は前記透光性導電性基板S105と同様にしてS106を作製した。
前記透光性導電性基板S105の作製において、120nm厚の中間層を形成させた以外は前記透光性導電性基板S105と同様にしてS107を作製した。
前記透光性導電性基板S101の作製において、導電性被覆層を形成した基板を、テトラクロロチタン(TiCl4)の40mM水溶液に、70℃で30分間浸漬し、続けて120℃で10分間乾燥させて15nm厚の中間層を形成させた以外は、前記透光性導電性基板S101と同様にしてS108を作製した。
前記透光性導電性基板S108の作製において、導電性被覆層を形成した基板を、テトラクロロチタン(TiCl4)の40mM水溶液に、70℃で30分間浸漬し、120℃で10分間乾燥させ、さらに続けて下記プラズマ処理条件2にてプラズマ処理することで15nm厚の中間層を形成させた以外は、前記透光性導電性基板S101と同様にしてS109を作製した。
図2中21の第1電源にはハイデン研究所PHF-6k(100kHz)を用いた。
添加ガス:酸素ガス 5.0体積%
電極温度:90℃
処理時間:30秒
〔透光性導電性基板S110の作製〕
集電線の無い比較基板として、上述したように作製した下引層を施したBase1上に、スズドープ酸化インジウム(ITO)材をターゲットに、高周波マグネトロンスパッタリング装置を用い、膜厚が150nmになるように導電性被覆層を形成させた。続けて、導電性被覆層を形成した上に、酸化チタン板をターゲット材に高周波マグネトロンスパッタ装置を用い、120nm厚の中間層を形成させ透光性導電性基板S110を作製した。
前記透光性導電性基板S110の作製において、中間層をS109の方法と同様にして作製した以外は前記透光性導電性基板S110と同様にしてS111を作製した。
《水蒸気透過度の評価》
ここでいう水蒸気透過度とは、単位面積、単位時間あたりの水蒸気の透過量で表され、JIS K7129:1992B法の水蒸気透過度試験法に準拠して、40℃90%RHの条件で、モコン社製水蒸気透過度測定装置PERMATRAN-W3/33Gタイプを用い、10-2g/(m2・24h)以上の水蒸気透過度について評価した。また、10-2g/(m2・24h)未満の水蒸気透過度は、JIS Z0208に準拠して、40℃90%RHの条件で、24時間毎の質量変化から見積もった。
〔SC-101の作製〕
前記作製した透光性導電性基板S101の上に、低温焼結用の酸化チタンペースト(SOLARONIX社製Ti-Nanoxide-TL)を、スクリーン印刷機を用いて印刷した。ここで、酸化チタンペーストからなる層の膜厚は約12μmの膜厚となるように、スクリーン印刷法で重ね印刷することで調製した。自然乾燥させた後、120℃の乾燥を30分行い、形成した半導体多孔質膜を50mm×50mm(有効面積25cm2)になるように周囲を削りとり、前記透光性導電性基板S101の上に酸化チタンからなる半導体多孔質膜層を形成した。乾燥処理後、色素増感型太陽電池用のルテニウム錯体色素化合物A(N719)の5.0×10-4mol/L、アセトニトリル:t-ブタノール=1:1(vol)の溶液に6時間浸漬し、色素吸着後、前記のアセトニトリル:t-ブタノール溶液で過剰な色素を十分に洗い落とし、乾燥して色素を吸着させた半導体多孔質膜層を有するアノード極を作製した。
前述したSC-101の作製法において、透光性導電性基板S101の代わりにそれぞれS102~S111を用いた以外は、SC-101の作製法と同様にSC-102~SC-111を作製した。
上記方法で作製した太陽電池セルについて、ソーラーシミュレーター(日本分光社製、低エネルギー分光感度測定装置CEP-25)により、AM1.5フィルタ、100mW/m2の強度の光を照射した時のIV特性を測定し、短絡電流Jsc(mA/cm2)および開放電圧値Voc(V)を、同じ構成および作製方法で3つ評価し平均値を表1に示した。またJsc、VocとFF(フィルファクター)から光電変換効率η(%)を求め同じく表1に示した。
上記で得られた太陽電池SC-101~111の各々に、JIS規格C8938の温湿度サイクル試験A-2に対応する温湿度変化(-20℃~85℃、相対湿度85%)を10サイクル実施し、その前後で上述の測定方法により光電変換効率η(%)を求めた。温湿度サイクル実施前の光電変換効率に対する温湿度サイクル実施後の光電変換効率の割合(%)をそれぞれの太陽電池について算出し、表1に示した。示した値は、同じ構成および作製方法の太陽電池3つずつ作製して評価した測定結果の平均値とした。
1a 金属集電層
2 金属酸化物半導体層
3 電荷移動層
4 導電性層(対向電極)
5 基材(対向電極)
5a 透明基材
6 金属酸化物中間層
10 プラズマ放電処理装置
11 第1電極
12 第2電極
21 第1電源
22 第2電源
30 プラズマ放電処理装置
32 放電空間
35 ロール回転電極
36 角筒型電極
40 電界印加手段
41 第1電源
42 第2電源
43 第1フィルタ
44 第2フィルタ
50 ガス供給手段
51 ガス発生装置
52 給気口
53 排気口
60 電極温度調節手段
G 薄膜形成ガス
G° プラズマ状態のガス
G′ 処理排ガス
Claims (3)
- 光透過性の基材上に少なくとも金属製の集電グリッドを含む導電性基材と、増感色素を吸着させた半導体多孔質膜層とを積層したアノード電極と、該アノード電極の半導体多孔質膜層側に対向するカソード電極と、前記アノード電極とカソード電極の2枚の電極間に電解質を封止した構成からなる色素増感型太陽電池において、前記導電性基材と半導体多孔質膜層との間に中間層を有し、該中間層の水蒸気透過度が0.1g/(m2・24h)以下であることを特徴とする色素増感型太陽電池。
- 前記中間層の膜厚が5nm以上100nm以下であることを特徴とする請求項1に記載の色素増感型太陽電池。
- 光透過性の基材上に金属製の集電グリッドからなる導電性基材と、増感色素を吸着させた半導体多孔質膜層とを積層したアノード電極と、該アノード電極の半導体多孔質膜層側に対向するカソード電極と、前記アノード電極とカソード電極の2枚の電極間に電解質を封止した構成からなる色素増感型太陽電池の製造方法において、前記導電性基材と半導体多孔質膜層との間に、中間層を形成し、該中間層を、少なくとも有機金属化合物と、還元性ガスと、希ガスあるいは窒素からなるキャリアガスの存在下、大気圧またはそれに近い気圧下において、プラズマCVD法により形成させることを特徴とする色素増感型太陽電池の製造方法。
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KR1020107025015A KR101137571B1 (ko) | 2008-05-12 | 2009-05-01 | 색소 증감형 태양 전지 및 그의 제조 방법 |
US12/991,725 US20110056556A1 (en) | 2008-05-12 | 2009-05-01 | Dye-sensitized solar cell and method for manufacturing the same |
JP2010511954A JP5360054B2 (ja) | 2008-05-12 | 2009-05-01 | 色素増感型太陽電池およびその製造方法 |
EP09746517A EP2276104A4 (en) | 2008-05-12 | 2009-05-01 | SOLAR COLOR CELL AND METHOD FOR MANUFACTURING SAME |
CN2009801166143A CN102089927B (zh) | 2008-05-12 | 2009-05-01 | 色素增感型太阳能电池及其制造方法 |
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EP (1) | EP2276104A4 (ja) |
JP (1) | JP5360054B2 (ja) |
KR (1) | KR101137571B1 (ja) |
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JP2011138628A (ja) * | 2009-12-25 | 2011-07-14 | Fujifilm Corp | 導電性要素およびその製造方法、並びに、導電性要素形成用感光材料 |
JP2012243549A (ja) * | 2011-05-19 | 2012-12-10 | Konica Minolta Business Technologies Inc | 色素増感太陽電池 |
JP2013197539A (ja) * | 2012-03-22 | 2013-09-30 | National Institute Of Advanced Industrial & Technology | 酸化物半導体膜の製造方法、及び酸化物半導体膜 |
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JP2011138628A (ja) * | 2009-12-25 | 2011-07-14 | Fujifilm Corp | 導電性要素およびその製造方法、並びに、導電性要素形成用感光材料 |
JP2012243549A (ja) * | 2011-05-19 | 2012-12-10 | Konica Minolta Business Technologies Inc | 色素増感太陽電池 |
JP2013197539A (ja) * | 2012-03-22 | 2013-09-30 | National Institute Of Advanced Industrial & Technology | 酸化物半導体膜の製造方法、及び酸化物半導体膜 |
CN104254495A (zh) * | 2012-04-25 | 2014-12-31 | 东曹精细化工株式会社 | 复合氧化物薄膜制造用组合物和使用该组合物的薄膜的制造方法、以及复合氧化物薄膜 |
JPWO2013161735A1 (ja) * | 2012-04-25 | 2015-12-24 | 東ソー・ファインケム株式会社 | 複合酸化物薄膜製造用組成物及びこの組成物を用いた薄膜の製造方法、並びに複合酸化物薄膜 |
CN104254495B (zh) * | 2012-04-25 | 2017-03-29 | 东曹精细化工株式会社 | 复合氧化物薄膜制造用组合物和使用该组合物的薄膜的制造方法、以及复合氧化物薄膜 |
WO2017006839A1 (ja) * | 2015-07-03 | 2017-01-12 | 国立大学法人京都大学 | ペロブスカイト型太陽電池 |
JP2017017252A (ja) * | 2015-07-03 | 2017-01-19 | 国立大学法人京都大学 | ペロブスカイト型太陽電池 |
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JPWO2009139310A1 (ja) | 2011-09-22 |
CN102089927A (zh) | 2011-06-08 |
EP2276104A1 (en) | 2011-01-19 |
KR20100131523A (ko) | 2010-12-15 |
EP2276104A4 (en) | 2012-02-29 |
US20110056556A1 (en) | 2011-03-10 |
CN102089927B (zh) | 2013-11-27 |
KR101137571B1 (ko) | 2012-04-19 |
JP5360054B2 (ja) | 2013-12-04 |
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