WO2003103085A1 - 光電変換素子 - Google Patents
光電変換素子 Download PDFInfo
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- WO2003103085A1 WO2003103085A1 PCT/JP2003/006819 JP0306819W WO03103085A1 WO 2003103085 A1 WO2003103085 A1 WO 2003103085A1 JP 0306819 W JP0306819 W JP 0306819W WO 03103085 A1 WO03103085 A1 WO 03103085A1
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- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
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- 239000006185 dispersion Substances 0.000 description 1
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- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- YAGKRVSRTSUGEY-UHFFFAOYSA-N ferricyanide Chemical compound [Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] YAGKRVSRTSUGEY-UHFFFAOYSA-N 0.000 description 1
- KTWOOEGAPBSYNW-UHFFFAOYSA-N ferrocene Chemical compound [Fe+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 KTWOOEGAPBSYNW-UHFFFAOYSA-N 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
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- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- GNOIPBMMFNIUFM-UHFFFAOYSA-N hexamethylphosphoric triamide Chemical compound CN(C)P(=O)(N(C)C)N(C)C GNOIPBMMFNIUFM-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
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- 239000007924 injection Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- VRWKTAYJTKRVCU-UHFFFAOYSA-N iron(6+);hexacyanide Chemical compound [Fe+6].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] VRWKTAYJTKRVCU-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- DZVCFNFOPIZQKX-LTHRDKTGSA-M merocyanine Chemical compound [Na+].O=C1N(CCCC)C(=O)N(CCCC)C(=O)C1=C\C=C\C=C/1N(CCCS([O-])(=O)=O)C2=CC=CC=C2O\1 DZVCFNFOPIZQKX-LTHRDKTGSA-M 0.000 description 1
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- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- DXGLGDHPHMLXJC-UHFFFAOYSA-N oxybenzone Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1 DXGLGDHPHMLXJC-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000005499 phosphonyl group Chemical group 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000001007 phthalocyanine dye Substances 0.000 description 1
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- 239000004584 polyacrylic acid Substances 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
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- 238000003825 pressing Methods 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
- 150000003222 pyridines Chemical class 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
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- 239000002109 single walled nanotube Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
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- 239000007921 spray Substances 0.000 description 1
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- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 125000004963 sulfonylalkyl group Chemical group 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- ZOPCDOGRWDSSDQ-UHFFFAOYSA-N trinonyl phosphate Chemical compound CCCCCCCCCOP(=O)(OCCCCCCCCC)OCCCCCCCCC ZOPCDOGRWDSSDQ-UHFFFAOYSA-N 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
- 239000001226 triphosphate Substances 0.000 description 1
- 235000011178 triphosphate Nutrition 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- JLEXUIVKURIPFI-UHFFFAOYSA-N tris phosphate Chemical compound OP(O)(O)=O.OCC(N)(CO)CO JLEXUIVKURIPFI-UHFFFAOYSA-N 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 239000001018 xanthene dye Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
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
- H01G9/2022—Light-sensitive devices characterized by he counter electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M14/00—Electrochemical current or voltage generators not provided for in groups H01M6/00 - H01M12/00; Manufacture thereof
- H01M14/005—Photoelectrochemical storage cells
-
- 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
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/344—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising ruthenium
-
- 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
Definitions
- the present invention relates to a photoelectric conversion element suitable for photovoltaic applications such as a solar cell. [Background technology]
- a photoelectric conversion element such as a so-called wet solar cell such as a dye-sensitized solar cell has a structure in which a working electrode on the photosensitive layer side and a counter electrode on the other side and an electrolyte is stored between the electrodes.
- the counter electrode is an indispensable material for promptly proceeding the oxidation-reduction reaction, but has a disadvantage in that the metal is corroded by the electrolyte.
- S N_ ⁇ 2 a transparent oxide conductive film-coated glass, such as F glass is generally used, in the case of using such a material, such as platinum on the surface in order to lower the activation energy of a redox reaction It is necessary to attach a noble metal exhibiting the catalytic activity. In order to deposit precious metals such as platinum, which exhibit catalytic activity, it is necessary to perform operations such as vacuum evaporation and sputtering, and large-scale equipment must be used. There are many issues that need to be solved.
- porous activated carbon as a counter electrode for a photoelectric conversion device of a different type
- H. Pettersson, T. Gruszecki Solar Energy Mater. Solar Cells, vol. 70, pp 203 (2001)
- These methods have limitations in device fabrication, such as the necessity of separately providing a porous layer between the working electrode and the counter electrode, and the necessity of sealing in a state where the electrolyte is impregnated.
- a method has been proposed in which conductive electrodes are mixed with a carbon material to produce a counter electrode by applying pressure, but this method has a low photoelectric conversion efficiency (H. Lindstrom, A. Holmberg). , E. Magnusson, S.-E. Lindquist, L. Malmqvist, A. Hagfeldt, Nano Lett., Vol 1, pp 97 (2001).
- the present invention has been made in view of such circumstances, and uses a novel counter electrode. Accordingly, it is an object of the present invention to provide a photoelectric conversion element having excellent performance and being easily manufactured.
- the present inventors have intensively studied to solve the conventional problems as described above, and as a result, have completed the present invention.
- the present invention relates to a photoelectric conversion element having a substrate and a counter electrode made of a conductive carbon layer formed on the substrate.
- the present invention also relates to a photoelectric conversion device, wherein the substrate is a conductive substrate.
- the present invention will be described in detail.
- the counter electrode of the present invention comprises a substrate and a conductive carbon layer formed on the substrate.
- the substrate is not particularly limited, and the material, thickness, dimensions, shape, and the like can be appropriately selected according to the purpose.
- the substrate may or may not be conductive, and in addition to metals such as gold and platinum, for example, colorless or colored glass, netted glass, glass block, and the like are used. Further, a colorless or colored resin having transparency may be used. Specific examples of these resins include polyesters such as polyethylene terephthalate, polyamides, polysulfones, polyethersulfones, polyetheretherketones, polyphenylenesulfides, polycarbonates, polyimides, and polymethylmetali- talides. Rate, polystyrene, senorelose triacetate, polymethylpentene and the like.
- the substrate in the present invention has a smooth surface at room temperature, and the surface may be a flat or curved surface, or may be deformed by stress. Further, in order to impart conductivity to the substrate, a conductive film made of a metal thin film such as gold, silver, chromium, copper, or tungsten, or a metal oxide may be provided on the surface. Examples of metal oxides include, for example, indium tin oxide (ITO (In 2 ⁇ 3: Sn)) and fluorine doped Tin Oxide (FTO ( S n ⁇ 2 : F)), Aluminum doped Zinc Oxide (AZO (ZnO: A1)) or the like is preferably used.
- ITO In 2 ⁇ 3: Sn
- FTO fluorine doped Tin Oxide
- AZO Zinc Oxide
- the conductive film has a thickness of usually 10 nm to 10 ⁇ , preferably 100 nm to 2 ⁇ m, and a surface resistance (resistivity) of usually 0.5 to 500 QZs q. Preferably, it is 2 to 50 ⁇ sq.
- These conductive films can be formed on a substrate by a known method such as a vacuum evaporation method, an ion plating method, a CVD method, an electron beam vacuum evaporation method, and a sputtering method.
- the conductive carbon layer formed on the substrate may be any conductive carbon layer as long as the conductive carbon layer is disposed on the substrate or on a conductive film on the substrate, and the arrangement mode is not particularly limited. However, a method of arranging them on the entire surface of the substrate, a part of the substrate, for example, a mesh shape, a stripe shape, or the like can be used.
- the coverage (area ratio) of the conductive carbon layer on the substrate is particularly limited.
- the content is preferably 50% or more, more preferably 80% or more, and further preferably 90% or more.
- the shape of the stripe and the shape of the mesh are not particularly limited, and various shapes using a straight line or a curved line are usually possible.
- the thickness of the line and the size of the mesh are not particularly limited, and can be appropriately selected according to the type of the conductive material and the like.
- the preferred line width is 1 ⁇ m to 10 mm, particularly preferably about 2 ⁇ m to 5 mm, and the interval is usually 1 ⁇ ! 110 cm, preferably about 2 ⁇ m to 5 cm.
- the thickness of the conductive carbon layer is usually ⁇ ! Lmnx, preferably 2 m to 0.5 mm.
- the conductivity (electrical conductivity) of the conductive carbon layer is usually 200 QZsq or less, preferably about 20 ⁇ / sq or less.
- the conductive carbon material constituting the conductive carbon layer is not particularly limited as long as it has a conductivity suitable for the present invention. Examples thereof include graphite-graphite, glassy carbon, and ⁇ -carbon. Examples include cetylene black, ketjen black, carbon fiber, activated carbon, petroleum coatas, fullerenes such as C60 and C70, single- and multi-walled carbon nanotubes, and preferably graphite, And carbon fiber.
- the shape of the conductive carbon material is not particularly limited as long as it finally forms a carbon layer, and the shape of the raw material may be any of powder, short fiber, long fiber, woven fabric, nonwoven fabric, and the like. It may be in a form.
- the powder When powder is used, it is preferable that the powder has an appropriate specific surface area. It is preferably about 100 to 200 Om 2 ng, and more preferably about 300 to 1000 m 2 Z g. Further, the average particle size is desirably about 5 to 1,000 nm, preferably about 8 to 200 nm.
- the conductive carbon layer in the present invention may be composed only of the conductive carbon material, but may contain other optional components as long as the object of the present invention is not impaired.
- a binder or the like is also preferably used to improve conductivity between raw materials such as carbon powder, short fibers and long fibers.
- the binder is not particularly limited as long as it is inert to the electrolyte after curing and does not electrolyze, and examples thereof include a polymer solid electrolyte, an epoxy resin, an acrylic resin, a melamine resin, a silicone resin, and polytetrafluoroethylene. Polystyrene, carboxymethylcellulose, polyvinylidene fluoride or their derivatives or mixtures are used.
- the mixing ratio of the conductive carbon material // binder is usually in the range of 10/90 to 90 to 10, preferably 20/80 to 8020.
- Other optional components include metal fine particles having a property of not being corroded by the electrolyte, and conductive oxide semiconductors such as ITO, FTO, and AZO.
- the method for forming the conductive carbon layer is not particularly limited, and a known method can be employed.
- a binder generally, the conductive carbon material and the binder are mixed to form a paste, and the surface of the substrate is screen-printed, flat-plate printed, gravure-printed, intaglio-printed, flexographic-printed, letterpress-printed.
- Manufacturing by special printing a method in which grooves are formed in advance on a substrate, and the grooves are filled with a paste containing a mixture of a conductive material and a binder, and then excess paste is removed with a spatula or the like. Can be. After placing the paste on the board surface, heat For example, the conductivity and the adhesion may be improved.
- infrared heating or the like may be used in addition to the open, the Matsufur furnace and the electric furnace.
- the firing temperature varies depending on the paste and substrate material used, but is preferably 50 ° C to 700 ° C, more preferably 100 ° C to 600 ° C, and still more preferably 200 ° C to 500 ° C.
- firing may be performed in a nitrogen atmosphere as necessary.
- a method of laminating a foil film made of a conductive carbon material, a woven fabric, a nonwoven fabric, a felt, a paper-shaped material, or the like on a substrate may be used.
- the photoelectric conversion element of the present invention is characterized by using the counter electrode thus obtained.
- Such an element is basically formed of a transparent conductive substrate and formed on the substrate.
- the photoelectric conversion layer (semiconductor layer) and the counter electrode are provided.
- the photoelectric conversion layer and the counter substrate may be in direct contact with each other, but usually, an electrolyte layer is disposed between them.
- an electrolyte layer is disposed between them.
- the electrolyte is not particularly limited, and may be either a liquid system or a solid system, and preferably exhibit reversible electrochemical redox characteristics.
- the electrolyte, ionic conductivity usually at room temperature 1 X 1 0- 7 S / cm or more, good Mashiku the 1 X 1 0- 6 SZc m or more, more preferably 1 X 1 0- 5 S / cm or more Is desirable.
- the ionic conductivity can be obtained by a general method such as a complex impedance method.
- the electrolyte in the present invention the diffusion coefficient of the oxidant 1 X 1 0_ 9 cm 2 Zs than on, preferably 1 X 1 0- 8 cm 2 Z s or more, more preferably 1 X 1 CI- 7 cm 2 It is desirable to show a value of / s or more.
- the diffusion coefficient is an indicator of ionic conductivity, and can be determined by a general method such as constant potential current characteristic measurement and cyclic voltammogram measurement.
- the thickness of the electrolyte layer is not particularly limited, but is preferably 1 im or more, more preferably 10 Aim or more, and preferably 3 mm or less, more preferably 1 mm or less.
- the liquid electrolyte is not particularly limited, and is usually a solvent or a reversible electrode. It is composed of a substance exhibiting a chemical redox property (soluble in a solvent) and, if necessary, a supporting electrolyte as a basic component.
- any solvent can be used as long as it is generally used for electrochemical cells and batteries.
- solvent one kind may be used alone, or two or more kinds may be used in combination.
- a substance exhibiting reversible electrochemical oxidation-reduction properties is usually a so-called redox material, but the type thereof is not particularly limited.
- Such substances include, for example, phenicene, ⁇ -benzoquinone, 7,7,8,8-tetracyanoquinodimethane, ⁇ , ⁇ , ⁇ ′, ⁇ , -tetramethyl- ⁇ -phenylenediamine, tetrathiafulvalene , Thianthracene, ⁇ -toluylamine and the like.
- redox material only one of the oxidized form and the reduced form may be used, or the oxidized form and the reduced form may be mixed at an appropriate molar ratio and added. Further, these redox couples may be added so as to exhibit electrochemical response.
- metallocene salts such as iodine
- halogens such as iodine, bromine and chlorine can also be used.
- Examples of the substance exhibiting reversible electrochemical oxidation-reduction properties include a salt having a counter-one (X—) selected from halogen ions and SCN—. Specifically, (CH 3 ) 4 N + X—, (C 2 H 5 ) 4 N + X, (n—C 4 H 9 ) 4 N + X—, and
- Quaternary ammonium salts such as (CH 3 ) 4 P + X—, (C 2 H 5 ) 4 P + X—, (C 3 H 7 ) 4 P + X—, (C 4 H 9 ) 4 P + And a phosphonium salt such as X—.
- the redox normal-temperature molten salt is a salt composed of an ion pair that is molten at room temperature consisting of only ion pairs containing no solvent component (that is, liquid), and usually has a melting point of 20 ° C. or less.
- a salt composed of an ion pair that is liquid at a temperature exceeding 20 ° C. and capable of performing a reversible electrochemical redox reaction is a salt composed of an ion pair that is molten at room temperature consisting of only ion pairs containing no solvent component (that is, liquid), and usually has a melting point of 20 ° C. or less.
- a salt composed of an ion pair that is liquid at a temperature exceeding 20 ° C. and capable of performing a reversible electrochemical redox reaction is a salt composed of an ion pair that is molten at room temperature consisting of only ion pairs containing no solvent component (that is, liquid), and usually has a melting point of 20 ° C. or
- One of the redox room-temperature molten salts may be used alone, or two or more may be used in combination.
- Examples of the redox room-temperature molten salt include the following.
- R represents an alkyl group having 2 to 20, preferably 2 to 10 carbon atoms.
- X ′ represents a counter-one, specifically, a halogen ion or SCN—.
- R 1 and R 2 are each an alkyl group having 1 to 10 carbon atoms (preferably a methyl group or an ethyl group), or an aralkyl group having 7 to 20 carbon atoms, preferably 7 to 13 carbon atoms (preferably Represents a benzyl group), and may be the same or different from each other.
- X— represents a counter ion, and specifically represents a halogen ion or SCN—.
- R 1 R 2 , R 3 , and R 4 are each an alkyl group having 1 or more carbon atoms, preferably an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms (such as a phenyl group), or A methoxy group, etc., which may be the same as or different from each other, and X— represents a counter anion, specifically a halogen ion or SCN—.
- the amount of the substance exhibiting reversible electrochemical oxidation-reduction properties is not particularly limited as long as it is dissolved in the solvent, but is usually 1% by mass to 50% by mass relative to the solvent. Is 3% by mass to 30% by mass. / 0 is desirable.
- salts such as alkali metal salts and alkaline earth metal salts; quaternary ammonium salts; cyclic quaternary ammonium salts; and quaternary phosphonium salts.
- inorganic ionic salts such as alkali metal salts and alkaline earth metal salts; quaternary ammonium salts; cyclic quaternary ammonium salts; and quaternary phosphonium salts.
- Li salts are preferred.
- salts include C 10 BFCF q SO (CF 3 S 0 2 ) (C 2 F R S 0 2 ) 2 N, PFA s F CH COO—, CH 3 (C 6 H
- the acids are not particularly limited, and inorganic acids, organic acids, and the like can be used, and specific examples thereof include sulfuric acid, hydrochloric acid, phosphoric acids, sulfonic acids, and carboxylic acids.
- the alkali metal is not particularly limited, and any of sodium hydroxide, lithium hydroxide, and lithium hydroxide can be used.
- the room temperature molten salt is not particularly limited, but the room temperature molten salt in the present invention is a salt consisting of an ion pair that is molten at room temperature consisting of only an ion pair containing no solvent component (that is, a liquid state). And usually a salt comprising an ion pair having a melting point of 20 ° C or less and being liquid at a temperature exceeding 20 ° C.
- One of the room-temperature molten salts can be used alone, or a mixture of two or more can be used.
- room temperature molten salt examples include, for example, the following.
- R represents an alkyl group having 2 to 20 carbon atoms, preferably 2 to 10 carbon atoms.
- R 1 and R 2 are each an alkyl group having 1 to 10 carbon atoms (preferably a methyl group or an ethyl group), or an aralkyl group having 7 to 20 carbon atoms, preferably 7 to 13 carbon atoms (preferably base shows a Njiru group), may be the same or different from each other,
- X is C 1 0 4 -., BF 4 _, (CF 3 S 0 2) 2 N -, (C 2 F 5 SO 2) Anion selected from 2 N-, PF 6- , As F 6- , CH 3 COO-, CH 3 (C 6 H 4 ) S 0 3 _, and (C 2 F 5 S 0 2 ) 3 C Represents.
- R 2 , R 3 , and R 4 are each an alkyl group having 1 or more carbon atoms, preferably an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms (such as a phenyl group), or methoxymethyl).
- . group indicates etc., may be the same or different from each other,
- X is C 1 O 4 _, BF 4 -, (CF 3 S_ ⁇ 2) 2 N -, (C 2 F 5 S0 2) 2 N -, PF 6- , As F 6- , CH 3 COO—, CH 3 (C 6 H 4 ) S 0 3 —, and (C 2 F 5 S0 2 ) 3 C—representing the anion selected from the forces.)
- the amount of the supporting electrolyte used is not particularly limited and is optional, but is usually 0.1 mass in the electrolyte. /.
- the content is preferably 1% by mass or more, more preferably 10% by mass or more, and 70% by mass or less, preferably 60% by mass or less, more preferably 50% by mass or less.
- the electrolyte used in the present invention may be a liquid system as described above, but a solid polymer electrolyte is particularly preferable from the viewpoint that all solidification is possible.
- High molecular JP03 / 06819 Particularly preferred as solid electrolytes are (a) a polymer matrix (component (a)) and (c) a substance exhibiting at least (c) a reversible electrochemical redox characteristic (component (c) And (b) optionally further containing a plasticizer (component (b)).
- other optional components such as (d) the above-mentioned supporting electrolyte and (e) room-temperature molten salt may be further contained, if desired.
- the component (b), or the component (b) and the component (c), or a further optional component is held in a polymer matrix to form a solid state or a gel state.
- a material that can be used as a polymer matrix includes a polymer matrix alone, a solid state or a gel state formed by the addition of a plasticizer, the addition of a supporting electrolyte, or the addition of a plasticizer and a supporting electrolyte.
- a plasticizer for polymer a plasticizer alone, a solid state or a gel state formed by the addition of a plasticizer, the addition of a supporting electrolyte, or the addition of a plasticizer and a supporting electrolyte.
- Examples of the polymer compound exhibiting the properties as the polymer matrix include hexafluoropropylene, tetrafluoroethylene, ethylene, trifluoroethylene, ethylene, propylene, acrylonitrile, bilidene chloride, acrylic acid, methacrylic acid, and methylatari. And high molecular compounds obtained by polymerizing or copolymerizing monomers such as acrylate, ethyl acrylate, methionyl methacrylate, styrene, and bilidene fluoride. These polymer compounds may be used alone or as a mixture. Among these, a polyvinylidene fluoride polymer compound is particularly preferred.
- polyvinylidene fluoride-based polymer compound examples include a homopolymer of vinylidene fluoride and a copolymer of vinylidene fluoride and another polymerizable monomer, preferably a radical polymerizable monomer.
- polymerizable monomers to be copolymerized with fusibinylidene include hexafluoropropylene, tetrafluoroethylene, trifluoroethylene, ethylene, propylene, and acrylonitrile.
- Vinylidene chloride acrylic acid, methacrylic acid, methyl acrylate, ethino acrylate, methyl methacrylate, and styrene.
- copolymerizable monomers are preferably 1 to 5% Omo 1% based on the total amount of the monomers. Alternatively, it can be used in the range of 1 to 25 mo 1%.
- Hexafluoropropylene is preferably used as the copolymerizable monomer.
- a vinylidene fluoride-hexafluoropropylene copolymer obtained by copolymerizing 1 to 25 mo 1% of hexafluoropropylene with vinylidene fluoride is preferably used as an ion conductive film having a high molecular weight matrix. be able to.
- two or more kinds of vinylidene fluoride-hexafluoropropylene copolymers having different copolymerization ratios may be mixed and used.
- two or more of these copolymerizable monomers can be used for copolymerization with bilidene fluoride.
- bilidene fluoride for example, bi-lidene fluoride + hexafluoropropylene + tetrafluoroethylene, fusidani bi-lidene 10-hexaf ore propylene + acryloleic acid, vinylidene fluoride + tetrafluoroethylene + ethylene, bi-lidene fluoride + tetrafluoroethylene
- a copolymer obtained by copolymerizing with a combination of ethylene and propylene can also be used.
- a poly (vinylidene fluoride) -based polymer compound as a polymer matrix a polyacrylic acid-based polymer compound, a polyatalylate-based polymer compound, a polymethacrylic acid-based polymer compound, and a polymethacrylate are used.
- One or more polymer compounds selected from the group consisting of a polymer compound, a polyacrylonitrile polymer compound, and a polyether polymer compound can be used as a mixture.
- one or more copolymers obtained by copolymerizing two or more monomers of the above-mentioned high molecular compounds with a poly (vinylidene fluoride) -based molecular compound can be used.
- the blending ratio of the homopolymer or copolymer is usually preferably 200 parts by mass or less based on 100 parts by mass of the polyvinylidene fluoride-based polymer compound.
- the weight average molecular weight of the polyvinylidene fluoride polymer compound used in the present invention is usually from 10,000 to 2,000, preferably from 100,000 to 100,000. Those in the range of 1, 000, 0000 can be suitably used.
- the plasticizer (component (b)) acts as a solvent for substances exhibiting reversible electrochemical redox properties. Such plasticizers are commonly used in electrochemical cells and batteries. Any solvent can be used as long as it can be used as an electrolyte solvent. Specific examples thereof include various solvents exemplified for the liquid electrolyte.
- Room temperature molten salts can also be used.
- the room-temperature molten salt is a salt composed of an ion pair that is molten at room temperature and is composed of only an ion pair containing no solvent component (that is, a liquid), and usually has a melting point of 20 ° C or less. Yes, it indicates a salt composed of an ion pair that is liquid at a temperature exceeding 20 ° C.
- the room temperature molten salt include, for example, the following.
- R represents an alkyl group having 2 to 20 carbon atoms, preferably 2 to 10 carbon atoms
- X ′ represents a halogen ion or SCN-.
- R 1 and R 2 each represent an alkyl group having 1 to 10 carbon atoms (preferably a methyl group or an ethyl group), or an aralkyl group having 7 to 20 carbon atoms, preferably 7 to 13 carbon atoms ( (Preferably a benzyl group), which may be the same or different, and X— represents a halogen ion or SCN—.
- R 2 , R 3 , and R 4 each have 1 or more carbon atoms, preferably 1 to A 6-alkyl group, a C6-C12 aryl group (such as a phenyl group), or a methoxymethyl group, which may be the same or different;
- X represents a halogen ion or SCN.
- One of the plasticizers may be used alone, or two or more plasticizers may be used in combination.
- the amount of the plasticizer (component (b)) used is not particularly limited, but is usually 20% by mass or more, preferably 50% by mass or more, more preferably 70% by mass or more in the ion conductive material. It can be contained in an amount of up to 95% by mass, preferably up to 95% by mass, more preferably up to 90% by mass.
- the substance (c) used in the present invention that exhibits reversible electrochemical redox properties will be described.
- Component (c) is a compound capable of performing the above-mentioned reversible electrochemical oxidation-reduction reaction, and is generally called a redox material.
- Examples of such compounds include, but are not limited to, ferrocene, p-benzoquinone, 7,7,8,8-tetracyanoquinodimethane, N, N, ⁇ ', ⁇ , —Tetramethyl- ⁇ -phenylenediamine, tetrathiafulvalene, anthracene, ⁇ -tonoleinoleamine and the like can be used.
- Br 2 and complex salts such as tetraalkylammonium bromide, viridinium bromide, sodium salt, ferric cyanate and ferricyanate, sodium polysulfide, and anolequinolecholine / leanorequinole resin Feed, hydroquinone-quinone, viologen and the like can be used.
- the redox material only one of the oxidized form and the reduced form may be used, or the oxidized form and the reduced form may be mixed at an appropriate molar ratio and added.
- the component (c) of the present invention includes a salt having a counter anion (X—) selected from a halogen ion and SCN.
- X— counter anion
- SCN a halogen ion and SCN.
- quaternary ann As JP03 / 06 819 Moyuumu salt specifically, (CH 3) 4 NX one, (C 2 H 5) 4 NX-, (n- C 4 H.) 4 NX-, furthermore,
- the redox-type room-temperature molten salt is a salt composed of an ion pair that is molten at room temperature consisting of only ion pairs containing no solvent component (that is, a liquid state), and usually has a melting point of 20 ° C or less.
- a salt consisting of an ion pair that is liquid at a temperature exceeding 20 ° C and capable of performing a reversible electrochemical oxidation-reduction reaction.
- the component (b) may be used in either form or not.
- One of the redox room-temperature molten salts may be used alone, or two or more may be used in combination.
- Examples of the redox room-temperature molten salt include the following.
- R represents an alkyl group having 2 to 20, preferably 2 to 10 carbon atoms
- X represents a halogen ion or SCN.
- R 1 and R 2 are each an alkyl group having 1 to 10 carbon atoms (preferably a methyl group or an ethyl group), or an aralkyl group having 7 to 20 carbon atoms, preferably 7 to 13 carbon atoms (preferably Represents a benzyl group), which may be the same or different.
- X represents a halogen ion or SCN.
- R 2 , R 3 , and R 4 each represent an alkyl group having 1 or more carbon atoms, preferably an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms (such as a phenyl group), or methoxymethyl).
- X represents a halogen ion or SCN.
- the amount of the substance (component (c)) exhibiting reversible electrochemical redox properties is not particularly limited, and is usually 0.1 mass in the solid polymer electrolyte. /. It is preferably at least 1% by mass, more preferably at least 10% by mass, and 70% by mass. / 0 or less, preferably 60% by mass or less, more preferably 50% by mass or less.
- the component (c) When the component (c) is used in combination with the component (b), it is desirable that the component (c) has a mixing ratio that dissolves in the component (b) and does not cause precipitation when the polymer solid electrolyte is used.
- the ratio of component (c) / component (b) is in the range of 0.01 to 0.5, more preferably 0.03 to 0.3, by mass.
- component (a) preferably component (a) / (component (b) + component (c)) 03 06819
- the mass ratio is desirably in the range of 120, more preferably 1/102.
- the amount of the supporting electrolyte (component (d)) used in the solid polymer electrolyte is not particularly limited and is optional, but is usually 0.1% by mass or more, preferably 1% by mass in the solid polymer electrolyte. Above, more preferably 10 mass. / 0 and 70% by mass or less, preferably 60% by mass or less, more preferably 50% by mass or less.
- the solid polymer electrolyte may further contain other components.
- Other components include an ultraviolet absorber, an amine compound and the like.
- the ultraviolet absorber that can be used is not particularly limited, but typical examples include an organic ultraviolet absorber such as a compound having a benzotriazole skeleton and a compound having a benzophenone skeleton.
- a compound represented by the following general formula (1) is preferably exemplified.
- R 8 1 is a hydrogen atom, a halogen atom or a carbon number of 1-1 0, preferably an alkyl group of 1 to 6.
- the halogen atom include fluorine, chlorine, bromine, and iodine.
- the alkyl group include a methyl group, an ethyl group, a propyl group, an i-propyl group, a butyl group, a t-butyl group, and a cyclohexyl group.
- the substitution position of R 8 1 is a 4- or 5-position of the benzotriazole ring, a halogen atom Contact Yopi the alkyl group position to the normal position 4.
- R 8 2 is a hydrogen atom or a carbon number of 1-1 0, preferably an 1-6 alkylene Le group.
- the alkyl group include a methyl group, an ethyl group, a propyl group, Examples thereof include an i-propyl group, a butyl group, a t-butyl group, and a cyclohexyl group.
- R 83 represents an alkylene group or an alkylidene group having 1 to 10 carbon atoms, preferably 1 to 3 carbon atoms.
- Examples of the alkylene group include a methylene group, an ethylene group, a trimethylene group, and a propylene group.
- the alkylidene group include an ethylidene group and a propylidene group.
- Specific examples of the compound represented by the general formula (1) include 3- (5-chloro-2H-benzotriazo-1-yl-2-yl) -15- (1,1-dimethylethynole) -14-hydroxy Benzenepropanoic acid, 3- (2H-Venzotriazole-2-yl) -15- (1,1-dimethylethyl) -14-Hydroxy-benzenebenzeneeanoic acid, 3- (2H-Venzotria) Zone 1 2-hydroxy) 4-hydroxybenzeneethaneanoic acid, 3-
- Examples of the compound having a benzophenone skeleton include compounds represented by the following general formula (2):
- R 92 , R 93 , R 95 , R 96 , R 98 , and R 99 are the same or different from each other, and are a hydroxy group, a carbon atom of 1 To 10, preferably 1 to 6, alkyl or alkoxy groups.
- alkyl group include a methyl group, an ethyl group, a propyl group, an i-propyl group, a butyl group, a t-butyl group, and a cyclohexyl group.
- alkoxy group include a methoxy group, an ethoxy group, a propoxy group, an i-propoxy group, and a butoxy group.
- R 91 , R 94 , and R 97 represent an alkylene group or an alkylidene group having 1 to 10 carbon atoms, preferably 1 to 3 carbon atoms.
- Examples of the alkylene group include a methylene group, an ethylene group, a trimethylene group, and a propylene group.
- Examples of the alkylidene group include an ethylidene group and a propylidene group.
- pl, p2, p3, ql, q2, and q3 each independently represent an integer of 0 to 3.
- Preferred examples of the compound having a benzophenone skeleton represented by the above general formulas (2) to (4) include 2-hydroxy-14-methoxybenzophenone-15-carboxylic acid and 2,2 ′ 4-hydroxybenzophenone, 4-hydroxybenzophenone, 4- (2-hydroxybenzoinole) -1,3-hydroxybenzenepropanoic acid, 2,4-dihydroxybenzophenone, 2-hydroxy 4-Methoxybenzophenone, 2-hydroxy 4-Methoxybenzophenone-15-sulfonic acid, 2-Hyd mouth 4-41n-Otoxybenzophenone, 2,2'-Dihydroxy 4 , 4 'dimethoxybenzophenone, 2,2', 4,4-tetrahydroxybenzophenone, 2-hydroxy-4-methoxy2, one-stroke norreoxybenzophenone, and the like.
- UV absorbers are optional, and the amount used is also particularly limited. If it is used, it is contained in the electrolyte in an amount of 0.1% by mass or more, preferably 1% by mass or more, and 20% by mass or less, preferably 10% by mass or less. It is desirable to have.
- the amine compound that can be contained in the ion conductive film of the present invention is not particularly limited, and various aliphatic amines and aromatic amines are used. Examples thereof include pyridine derivatives, biviridine derivatives, and quinoline derivatives. It is mentioned as a typical thing. The addition of these amine compounds is expected to improve the open circuit voltage. Specific examples of these compounds include 4-t-butyl-pyridine, quinoline, isoquinoline, and the like.
- the electrolyte may be manufactured as a redox electrolyte film, and the method will be described below.
- these polymer solid electrolytes can be obtained by forming a mixture comprising the components (a) and (c) and optional components to be mixed into a film by a known method.
- the molding method in this case is not particularly limited, and examples thereof include extrusion molding, a method of obtaining a film state by a casting method, spin coating, dip coating, injection, and impregnation.
- Extrusion molding can be carried out by a conventional method. After the mixture is heated and melted, a film is molded.
- the mixture can be further adjusted in viscosity with an appropriate diluent, applied by a usual coater used in the casting method, and dried to form a film.
- a coater a doctor coater, a blade coater, a rod coater, a knife coater, a Rino Kushirono recorder, a gravure coater, a spray coater, and a curtain coater can be used, and can be selectively used depending on viscosity and film thickness.
- a film can be formed by further adjusting the viscosity of the mixture with a suitable diluent, applying the mixture using a commercially available spin coater, and drying.
- the semiconductor layer used is not particularly limited, for example, B i 2 S 3, C d S, C d S e, C dT e, Cu I n S 2, C u I n S e 2, F e 2 0 3, G a P, G aA s, I n P, Nb 2 0 5, P b S, S i, S n 0 2, T i 0 2, WO 3,
- Examples include a layer composed of Zn0, ZnS, and the like, and a combination of a plurality of these layers may be used.
- the semiconductor used in the present invention may be single crystal or polycrystal. As a crystal system, an anatase type, a rutile type, a brookite type and the like are mainly used, and an anatase type is preferable.
- a known method can be used for forming the semiconductor layer.
- the semiconductor layer can be obtained by applying a nanoparticle dispersion liquid, a sol solution, or the like of the semiconductor on a substrate by a known method.
- the coating method in this case is not particularly limited, and includes a method of obtaining a thin film state by a casting method, a spin coating method, a dip coating method, a bar coating method, and various printing methods such as a screen printing method. be able to.
- the thickness of the semiconductor layer is arbitrary, but is 0.5 m or more and 50 ⁇ m or less, preferably 1 im or more and 20 ⁇ m or less.
- Various dyes can be adsorbed or contained in the semiconductor layer for the purpose of improving the light absorption efficiency of the semiconductor layer.
- the dye used in the present invention is not particularly limited as long as it improves the light absorption efficiency of the semiconductor layer.
- one or more kinds of various metal complex dyes and organic dyes are used. Can be.
- a carboxyl group, a hydroxyl group, a sulfonyl group, a phosphonyl group, a carboxylalkyl group, a hydroxyalkyl group, a sulfonylalkyl group, a phosphoellalkyl group are added to the dye molecule.
- Those having a functional group such as are preferably used.
- Metal complex dyes include ruthenium, osmium, iron, cobalt, and zinc complexes Metal phthalocyanine, chlorophyll and the like.
- X represents a monovalent aion, but two Xs may be independent or cross-linked.
- X represents a monovalent aion, but two Xs may be independent or cross-linked.
- the following are exemplified.
- X represents a monovalent anion.
- t a monovalent anion.
- Y is a monovalent anion, halogen ion, SCN-, CIOBF
- Z is an atomic group having an unshared electron pair, and two Zs may be independent or may be bridged.
- two Zs may be independent or may be bridged.
- Y is a monovalent anion, halogen ion, S CN-, C 1 O B F
- organic dye a cyanine dye, a hemicyanine dye, a merocyanine dye, a xanthene dye, a triphenylmethane dye, and a metal-free phthalocyanine dye can be used.
- Examples of the organic dye used in the present invention include the following.
- NaOOC COONa As a method for causing the dye to be adsorbed on the semiconductor layer, a method in which a solution in which the dye is dissolved in a solvent is applied onto the semiconductor layer by spray coating / spin coating or the like, followed by drying. In this case, the substrate may be heated to an appropriate temperature. Alternatively, a method in which a semiconductor layer is immersed in a solution and adsorbed can be used. The immersion time is not particularly limited as long as the dye is sufficiently adsorbed, but is preferably 1 to 30 hours, particularly preferably 5 to 20 hours. In addition, the solvent and the substrate may be heated during the immersion as needed.
- the concentration of the dye in a solution is preferably 1 to: L0OmMZL, and preferably about 10 to 50OmMZL.
- the solvent used is not particularly limited as long as it dissolves the dye and does not dissolve the semiconductor layer.
- Methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, t-butanol Such as anolecol, acetonitrile, propio-tolyl, methoxypropio-tolyl, glutaronitrile, etc., benzene, tonolene, o-xylene, m-xylene, p-xylene, pentane, heptane, hexane, and sic Mouth hexane, heptane, acetone, methyl ethyl ketone, methyl ethyl ketone, ketones such as 2-butanone, ethyl ether, tetra
- the transparent conductive substrate is usually manufactured by laminating a transparent electrode layer on a transparent substrate.
- the transparent substrate is not particularly limited, and the material, thickness, dimensions, shape, and the like can be appropriately selected according to the purpose.
- colorless or colored glass, netted glass, glass block, and the like are used.
- a colorless or colored resin having transparency may be used.
- polyesters such as polyethylene terephthalate, polyamide, polysulfone, polyether sulfone, polyether ether ketone, polyphenylene sulfide, polycarbonate, polyimide, polymethyl methacrylate, polystyrene, cellulose triacetate, polymethylpentene And the like.
- the term “transparent” in the present invention means having a transmittance of 10 to 100%
- the substrate according to the present invention which is PT / parent / note, has a smooth surface at room temperature, and the surface may be flat or curved, or may be deformed by stress.
- the transparent conductive film forming the conductive layer of the electrode is not particularly limited as long as the object of the present invention is achieved.
- the transparent conductive film may be formed of a metal thin film such as gold, silver, chromium, copper, tungsten, or a metal oxide.
- metal oxides include, for example, tin oxide or zinc oxide, indium tin oxide (ITO (In 2 O 3 : Sn)) in which a small amount of another metal element is doped, and fluorine doped tin oxide (FTO (sn 0 2: F)), Aluminum doped Zinc Oxide (AZO (Z n O: A 1)) or the like is used as a preferable.
- the film thickness is usually from 10 nm to 10 ⁇ ⁇ , preferably from 100 nm to 2.
- the surface resistance (resistivity) is appropriately selected depending on the use of the substrate of the present invention, but is usually 0.5 to 500 Q / sq, preferably 2 to 50 ⁇ / sq.
- a photovoltaic element having a cross section shown in FIG. 1 can be preferably mentioned.
- This device has a substrate A provided with a semiconductor layer (titania layer and dye layer) on a transparent substrate, and a conductive counter electrode (substrate B) having a conductive carbon layer formed on the substrate. . The gap between them is filled with electrolyte, and the periphery is sealed with a sealing material.
- a lead wire is connected to a conductive portion of each substrate to extract an electromotive force.
- the method for producing the photoelectric conversion element of the present invention is not particularly limited, but usually, the substrate A, the electrolyte, and the substrate B are laminated, the peripheral portion is appropriately sealed, and the substrate A and the substrate B are opposed at a predetermined interval. Thereafter, it can be easily manufactured by a known method such as putting an electrolyte in the gap.
- the distance between the substrates is usually at least 0.1 im, preferably at least 1 im, and the upper limit is usually at most 1 mm, preferably at most 0.5 mm.
- a photoelectric conversion element having good durability can be manufactured more safely. It can be provided at a low cost of material and production cost, and is suitable as a solar cell element.
- Acrylic thermosetting resin (trade name “Ataridic”: manufactured by Dainippon Ink and Chemicals, Inc.) 10 g and melamine resin (trade name “Vancemin”: manufactured by Harima Chemicals) 2.2 g of graphite (product) (US SP: manufactured by Nippon Graphite Shoji Co., Ltd.) 12 g was added, and 24 g of ethylene glycol mono-n-butyl ether was added and mixed to prepare a conductive base.
- melamine resin trade name “Vancemin”: manufactured by Harima Chemicals
- the conductive paste was bar-coated on almost the entire surface of a 5 cm square glass substrate and cured by heating at 160 ° C. for 0.5 hours. Then, it was baked at 500 ° C for 3 hours in a nitrogen atmosphere to obtain a counter electrode having a conductive carbon layer.
- the thickness of the carbon layer was 50 m, and the surface resistance of the carbon layer of the obtained counter electrode was 50 ⁇ / sq.
- a solution of propylene carbonate containing 3mo 1 ZL of lithium iodide and 0.03mol ZL of iodine was impregnated by capillary action, and the periphery was sealed with an epoxy adhesive. A lead wire was connected to the counter electrode.
- the cells obtained in this way were irradiated with simulated sunlight, and the current-voltage characteristics were measured. As shown in Fig. 2, good photoelectric conversion characteristics were obtained.
- Acryl-based thermosetting resin (trade name “Acryl-G”: Honey Kasei Co., Ltd.) 48 g and melamine resin (trade name “Nikki Rack SM55 1j: Sanwa Chemical Co., Ltd.”) 10 g Black (trade name “ECP 600 JD”: manufactured by Mitsubishi Chemical Corporation) was added, and 80 g of ethylene glycolone mono-n-butyl ether was added and mixed to prepare a conductive paste.
- the conductive paste was overcoated on almost the entire surface of a 5 cm square glass substrate, and cured by heating at 160 ° for 0.5 hour. Then, it was baked at 500 ° C. for 3 hours in a nitrogen atmosphere to obtain a counter electrode having a conductive carbon layer.
- the thickness of the carbon layer was 50 ⁇ , and the surface resistance of the carbon layer of the obtained counter electrode was measured to be 55 ⁇ / sq.
- the cell obtained in this way was irradiated with simulated sunlight, and the current-voltage characteristics were measured. As shown in FIG. 3, good photoelectric conversion characteristics were obtained.
- Ketjen Black product name "ECP 600 JD”: manufactured by Mitsubishi Chemical Corporation
- silicone-based thermosetting resin product name "RZ-7705": manufactured by Nippon Yuka Co., Ltd.
- the conductive paste was bar-coated on almost the entire surface of a 5 cm square glass substrate, and was cured by heating at 160 for 0.5 hour. Then, it was baked at 500 ° C. for 3 hours in a nitrogen atmosphere to obtain a counter electrode having a conductive carbon layer.
- the thickness of the carbon layer was 50 ⁇ , and the surface resistance of the carbon layer of the obtained counter electrode was measured to be 35 ⁇ / sq.
- the cell thus obtained was irradiated with pseudo sunlight and the current-voltage characteristics were measured. As shown in FIG. 4, good photoelectric conversion characteristics were obtained.
- FIG. 1 is an example of a cross section of a photoelectric conversion element.
- FIG. 2 is a measurement diagram of current-voltage characteristics of the photoelectric conversion element obtained in Example 1.
- FIG. 3 is a measurement diagram of the current-voltage characteristics of the photoelectric conversion element obtained in Example 2.
- FIG. 4 is a measurement diagram of the current-voltage characteristics of the photoelectric conversion element obtained in Example 3.
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Abstract
Description
Claims
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JP2004510062A JPWO2003103085A1 (ja) | 2002-06-04 | 2003-05-30 | 光電変換素子 |
EP03730713A EP1511116A4 (en) | 2002-06-04 | 2003-05-30 | PHOTOELECTRIC TRANSFORMER |
US10/996,837 US20050092359A1 (en) | 2002-06-04 | 2004-11-24 | Photovoltaic device |
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JP2002163482 | 2002-06-04 | ||
JP2002-163482 | 2002-06-04 |
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US10/996,837 Continuation US20050092359A1 (en) | 2002-06-04 | 2004-11-24 | Photovoltaic device |
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US (1) | US20050092359A1 (ja) |
EP (1) | EP1511116A4 (ja) |
JP (1) | JPWO2003103085A1 (ja) |
WO (1) | WO2003103085A1 (ja) |
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JP2006244919A (ja) * | 2005-03-04 | 2006-09-14 | Nippon Oil Corp | 光電変換素子 |
JP2007073414A (ja) * | 2005-09-08 | 2007-03-22 | Fujikura Ltd | 電極及びその製造方法、並びに光電変換素子 |
JP2009048946A (ja) * | 2007-08-22 | 2009-03-05 | Teijin Dupont Films Japan Ltd | 色素増感型光電変換素子 |
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US8318532B2 (en) * | 2006-12-01 | 2012-11-27 | The Regents Of The University Of California | Enhancing performance characteristics of organic semiconducting films by improved solution processing |
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US9954123B2 (en) | 2013-03-15 | 2018-04-24 | The Trustees Of Dartmouth College | Multifunctional nanostructured metal-rich metal oxides |
KR20140122361A (ko) * | 2013-04-09 | 2014-10-20 | 삼성에스디아이 주식회사 | 염료감응 태양전지용 전해질 및 이를 이용한 염료감응 태양전지 |
KR101728329B1 (ko) | 2015-11-19 | 2017-05-02 | 현대자동차주식회사 | 터치 입력장치, 이를 포함하는 차량, 및 그 제조방법 |
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Also Published As
Publication number | Publication date |
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EP1511116A4 (en) | 2010-05-05 |
EP1511116A1 (en) | 2005-03-02 |
JPWO2003103085A1 (ja) | 2005-10-06 |
US20050092359A1 (en) | 2005-05-05 |
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