CN100358161C - Dye sensitized solar cell and its battery - Google Patents
Dye sensitized solar cell and its battery Download PDFInfo
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- CN100358161C CN100358161C CNB2003101120322A CN200310112032A CN100358161C CN 100358161 C CN100358161 C CN 100358161C CN B2003101120322 A CNB2003101120322 A CN B2003101120322A CN 200310112032 A CN200310112032 A CN 200310112032A CN 100358161 C CN100358161 C CN 100358161C
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- electrode
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- 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
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Abstract
The present invention relates to a dye-sensitized solar cell which comprises a first electrode, a second electrode and an electrolyte, wherein the first electrode comprises a transparent conductive basal piece and a thin film formed on the transparent conductive basal piece and loaded with dye molecules; the electrolyte is positioned between the first electrode and the second electrode. The dye-sensitized solar cell further comprises a light guiding device with a metal light guiding layer, wherein the light guiding device is close to the first electrode, and thus, at least parts of light rays are steered via the light guiding device to enter the first electrode when the dye-sensitized solar cell works. The present invention also provides a cell set composed of cell units which use the dye-sensitized solar cells. The light guiding device is added to the dye-sensitized solar cell and the cell set, and thus, the problem that the existing dye-sensitized solar cells can not be laminated is solved.
Description
[technical field]
The present invention relates to a kind of DSSC and battery pack thereof, refer to a kind of stackable DSSC and battery pack thereof especially.
[background technology]
Solar cell is a kind of device that solar energy is converted into electric energy.The seventies in 20th century, the silicon solar cell of at first being developed by U.S.'s Bell Laboratory progressively grows up.The operation principle of this silicon solar cell is based on semi-conductive photovoltaic effect.Though the electricity conversion height of silicon solar cell, its complex manufacturing technology, cost an arm and a leg, to the material requirements harshness, thereby limit its extensive use.The DSSC of nineteen nineties applying nano crystal exploitation is expected to replace traditional silicon solar cell, and becomes the research focus in this field thus.
DSSC adopts the nano thin-film of the wide bandgap semiconductor that is formed at conductive substrate, at its surface adsorption one light-sensitive coloring agent, forms its work electrode thus.The operation principle of DSSC is when dye molecule absorbs sunlight, and its electron transition is to excitation state and be transferred to semiconductor rapidly, and the hole is then stayed in the dyestuff.Electronics diffuses to conductive substrate subsequently, is transferred to electrode through external circuit.And the dyestuff of oxidation state is reduced by electrolyte, and oxidized electrolyte becomes ground state in that electrode is accepted electron reduction.Thereby finish the whole transmission course of electronics.
See also Fig. 1, on May 22nd, 2002, open, application number was that 01140225.3 Chinese patent discloses a kind of solar cell electrode of nanometer crystal film that relates to DSSC material field and preparation method thereof.This solar cell electrode of nanometer crystal film 30 forms wide bandgap semiconductor nanometer crystal film 32 in transparent conduction base sheet 31, forms an adsorption of metal ions layer 33 in the surface of this nanometer crystal film 32, again absorption photosensitizer 34 on adsorption of metal ions layer 33.By the finishing of metal ion, this nanometer crystal film electrode forms a potential barrier in nanocrystal surface, and this potential barrier can reduce charge recombination, thereby improves the electricity conversion of solar cell.
In the practical application, because the electric power exported of homogencous dyes sensitization solar battery is limited, for improving its energy output, with many DSSC after connection in series-parallel assembled package program, make template, become solar cell template (Solar Module).
But the DSSC of using above-mentioned electrode and be work electrode must be the front sensitive surface with the transparent conduction base sheet that is distributed with the nanometer crystal film material when it uses, and could produce electric energy by the light source direct irradiation.When light source by figure in during the battery side-irradiation of arrow indication, this DSSC just can't be carried out opto-electronic conversion.Thereby when it formed the battery pack use as battery unit, each battery unit can't stacked use.So, need large tracts of land to launch during actual the use, make troubles for concrete enforcement, limit its scope of application thus.
In view of this, provide a kind of DSSC that can stackedly use and battery pack thereof to be necessity in fact.
[summary of the invention]
For solving the problem that existing dye-sensitized cell and battery pack thereof can't stacked uses, first purpose of the present invention is to provide a kind of DSSC that can stacked use.
Second purpose of the present invention is to provide a kind of DSSC group that can stacked use.
For realizing first purpose, the invention provides a kind of DSSC, comprising: one first electrode comprises that a transparent conduction base sheet and is formed at this transparent conduction base sheet, is loaded with the film of dye molecule; One second electrode; One electrolyte between first and second electrode.Wherein, this DSSC further comprises the light pipe of a tool metal optical waveguide layer, this light pipe is near described first electrode, so that during the work of this DSSC, after turning to by described light pipe, small part light enters described first electrode.
For realizing second purpose, the invention provides a kind of DSSC group, comprise some DSSC unit, each battery unit comprises one first electrode, the electrolyte of one second electrode and between first and second electrode, and wherein this first electrode comprises that a transparent conduction base sheet and is formed at this transparent conduction base sheet and is loaded with the film of dye molecule.Wherein, first electrode of a battery unit is electrically connected with second electrode formation of another battery unit in every adjacent two battery units; Each battery unit further comprises the light pipe of a tool metal optical waveguide layer and close its first electrode, so that during the work of this DSSC group, to first electrode that enters the respective battery unit after small part light turns to by each light pipe respectively.
For realizing second purpose, the invention provides another kind of DSSC group, comprise some DSSC unit, each battery unit comprises one first electrode, the electrolyte of one second electrode and between first and second electrode, and wherein this first electrode comprises that a transparent conduction base sheet and is formed at this transparent conduction base sheet and is loaded with the film of dye molecule.Wherein, first electrode of a battery unit is electrically connected with second electrode formation of another battery unit in every adjacent two battery units; Each battery unit further comprises the light pipe of a tool metal optical waveguide layer and close its second electrode, so that during the work of this DSSC group, in every adjacent two batteries, to first electrode that enters another battery after the light pipe of small part light by a battery turns to.
With respect to prior art, the present invention adds light pipe in each battery unit of DSSC and DSSC group, make light source by its side-irradiation condition under, enter battery after light is turned to by this light pipe, thereby this kind battery and battery pack can be carried out normal opto-electronic conversion.This kind DSSC can stackedly be formed the DSSC group thus, and for concrete enforcement offers convenience, the scope of application is more extensive.
[description of drawings]
Fig. 1 is the schematic diagram of existing DSSC;
Fig. 2 is the schematic diagram of the DSSC of first embodiment of the invention;
Fig. 3 is the schematic diagram of the battery pack formed of battery unit with the DSSC of Fig. 2 for the present invention;
Fig. 4 is the schematic diagram of the DSSC of second embodiment of the invention;
Fig. 5 is the schematic diagram of the battery pack formed of battery unit with the DSSC of Fig. 4 for the present invention.
[embodiment]
The present invention is described in further detail below in conjunction with accompanying drawing.
See also Fig. 2, the DSSC 6 of the first embodiment of the present invention, it comprises one first electrode, 62, one second electrodes 66, one is positioned at the metal optical waveguide layer 68 that electrolyte 64 and one between first and second electrode 62,66 is formed at this first electrode 62.Wherein, when using this DSSC 6, part enters this first electrode 62 after being turned to by this metal optical waveguide layer 68 by the light of its side incident.
Wherein, first electrode 62 comprises a transparent conduction base sheet 621 and a film 623 formed thereon.Transparent conduction base sheet 621 can be the tin ash electro-conductive glass that fluorine mixes.Film 623 is that the wide bandgap semiconductor oxide material of 1-50 nanometer is made by granularity, as titanium dioxide, zinc oxide etc.It can be formed at this transparent conduction base sheet 621 by application pattern, and thickness can be the 1-50 micron.Film 623 is formed with a dye coating 625 as photosensitizer.Present embodiment adopts cis-two thiocyanate radical-two (4,4 '-dicarboxylic acids-2,2 '-bipyridine) closes ruthenium cis-dithiocyanato bis (4,4 ' dicarboxy-2,2 '-bipyridine) ruthenium (abbreviating the N3 dyestuff as), it is mixed with certain density solution or gel, it is adsorbed on the film 623, form dye coating 625 thus by the mode of soaking.It should be noted that transparent conduction base sheet 621, film 623 and dye coating 625 also can select for use other material to form respectively, should be with in addition limit of present embodiment.
Second electrode 66 generally includes a conductive substrate 661 and a metal level 663 formed thereon.Conductive substrate 661 is generally electro-conductive glass.Inert metals such as metal level 663 Ying Youjin, platinum are formed, and can be formed at conductive substrate 661 side surface relative with first electrode 62 by the mode of plated film.Metal level 663 preferably has a smooth surface, in order to produce direct reflection, to improve the utilance of light.Certainly, second electrode 66 also can directly be a metal electrode of being made up of inert metals such as gold, platinum.This metal electrode and first electrode, 62 facing surfaces preferably also have high-flatness.
Electrolyte 64 can be a kind of oxide thin layer reduction electrolyte solution between first electrode 62 and second electrode 66, selects iodine/lithium iodide electrolyte for use.Electrolyte 64 also can be solid-state, and promptly DSSC 6 can be solid state battery, is not necessarily limited to present embodiment.
In the present embodiment, DSSC 6 further comprises a metal optical waveguide layer 68, and it is formed at the opposite side surface of first electrode 62 relative with film 623.Metal optical waveguide layer 68 has the optical design of leaded light, is mainly used in to penetrate after making the light that incides this metal optical waveguide layer 68 change direction.For example, when being one smooth, even curface with the first electrode adjacent metal optical waveguide layer, 68 surfaces (figure mark), the part light that is sent by light source arrives these metal optical waveguide layers 68 by transparent conduction base sheet 621 backs of first electrode 62, and, reenter first electrode 62 and arrive dye coating 625 thereby change direction in this smooth surface generation direct reflection.
In addition, can also some salient points or depression be set with the first electrode adjacent metal optical waveguide layer, 68 surfaces, the size of this salient point or depression, quantity, distributing position and density degree can be designed according to actual needs.When light arrives metal optical waveguide layer 68 and has salient point or depression surperficial, can diffuse reflection take place at this, enter first electrode 62 and arrive dye coating 625 thereby change direction.
Certainly, metal optical waveguide layer 68 also can have the leaded light design of other form.Between it and first electrode 62 other transparent material layer can be arranged, as be used to increase the optical module of incident light quantity or optically focused.That is to say that for reaching the purpose that incident ray is turned to enter first electrode 62, this metal optical waveguide layer 68 can relevant accessory part with other be formed a light pipe and concured.This metal optical waveguide layer 68 can be made by metal or alloy.
See also Fig. 3, this figure is that the DSSC 6 with two first embodiment of the present invention is the battery pack 600 that battery unit 601,602 is formed.Wherein, second electrode 6016 of battery unit 601 forms with first electrode 6022 of battery unit 602 and is electrically connected.The metal optical waveguide layer 6028 of battery unit 602 is adjacent with second electrode 6016 of battery unit 601.During 600 work of this DSSC group, light can be respectively metal optical waveguide layer 6018,6028 by battery unit 601,602 enter its first electrode 6012,6022 after turning to.
What can substitute is that in adjacent two battery units 601,602, the metal optical waveguide layer 6028 of battery unit 602 also is formed directly in the side surface 6017 of second electrode 6016 of battery unit 601 near battery unit 602.
See also Fig. 4 and Fig. 5, it is respectively the DSSC 7 of the second embodiment of the present invention and the battery pack of forming 700 thereof.Compare with the DSSC 6 of first embodiment, the structure of DSSC 7, material can be consistent with it substantially.Both main differences are that metal optical waveguide layer 78 is formed at second electrode 76.When second electrode 76 was metal electrode, this metal optical waveguide layer 78 also can directly be a side surface of second electrode 76.
See also Fig. 4, similar when only using homogencous dyes sensitization solar battery 7 to traditional solar cell, as sensitive surface, directly accept light source irradiation by the transparent conduction base sheet of its first electrode 72.
See also Fig. 5, when dye-sensitized cell 7 is a battery unit 701, during 700 work of 702 battery pack of forming, its sensitive surface need not directly to accept light source irradiation, each battery unit can be stacked, light source can be by battery pack 700 side-irradiations, enter first electrode of its adjacent cell after the metal optical waveguide layer of light by a battery unit turns to.
In addition, those skilled in the art should be understood that, for preventing that light scatters and disappears, improve light utilization efficiency, also can correspondingly increase relevant design, design a reflecting surface as transparent conduction base sheet away from the bottom surface of light source, between the transparent conduction base sheet of first electrode and film, increase by a light diffusion layer at first electrode.DSSC of the present invention also can comprise some current steering devices, and it is linked to each other with external circuit.The quantity of the battery unit of the concrete shape of this battery, structure, material and composition battery pack also can have other variation, should not exceed with described specific embodiment.
The present invention adds light pipe in each battery unit of DSSC and DSSC group, make light source by its side-irradiation condition under, enter battery after light is turned to by this light pipe, thereby this kind battery and battery pack can be carried out normal opto-electronic conversion.This kind DSSC can stackedly be formed the DSSC group thus, and for concrete enforcement offers convenience, the scope of application is more extensive.
Claims (11)
1. DSSC comprises: one first electrode comprises that a transparent conduction base sheet and is formed at this transparent conduction base sheet, is loaded with the film of dye molecule; One second electrode; One electrolyte between first and second electrode; It is characterized in that, this DSSC comprises that further one has the light pipe of metal optical waveguide layer, this light pipe is near described first electrode, so that during the work of this DSSC, after turning to by described light pipe, small part light enters described first electrode.
2. DSSC as claimed in claim 1 is characterized in that, described metal optical waveguide layer comprises a smooth surface.
3. DSSC as claimed in claim 1 is characterized in that, described metal optical waveguide layer comprises that one is provided with some raised or sunken surfaces.
4. DSSC group, it comprises some DSSC unit, each battery unit comprises one first electrode, the electrolyte of one second electrode and between first and second electrode, wherein, this first electrode comprises that a transparent conduction base sheet and is formed at this transparent conduction base sheet and is loaded with the film of dye molecule; First electrode of a battery unit forms with second electrode of another battery unit and is electrically connected in every adjacent two battery units; It is characterized in that: each battery unit further comprises the light pipe of a tool metal optical waveguide layer and close its first electrode, so that during the work of this DSSC group, to first electrode that enters the respective battery unit after small part light turns to by each light pipe respectively.
5. DSSC group as claimed in claim 4 is characterized in that, described DSSC unit further comprises a transparent material layer between described light pipe and described first electrode.
6. as 4 described DSSC groups of claim the, it is characterized in that in every adjacent two batteries, the light pipe of a battery is formed at second electrode of another battery.
7. as 4 described DSSC groups of claim the, it is characterized in that described metal optical waveguide layer comprises a smooth surface.
8. as 4 described DSSC groups of claim the, it is characterized in that described metal optical waveguide layer comprises that one is provided with some raised or sunken surfaces.
9. DSSC group, comprise some DSSC unit, each battery unit comprises one first electrode, the electrolyte of one second electrode and between first and second electrode, and wherein this first electrode comprises that a transparent conduction base sheet and is formed at this transparent conduction base sheet and is loaded with the film of dye molecule; First electrode of a battery unit forms with second electrode of another battery unit and is electrically connected in every adjacent two battery units; It is characterized in that: each battery unit further comprises the light pipe of a tool metal optical waveguide layer and close its second electrode, so that during the work of this DSSC group, in every adjacent two batteries, to first electrode that enters another battery after the light pipe of small part light by a battery turns to.
10. as 9 described DSSC groups of claim the, it is characterized in that described metal optical waveguide layer is a smooth surface.
11., it is characterized in that described metal optical waveguide layer is one to be provided with some raised or sunken surfaces as 9 described DSSC groups of claim the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101120322A CN100358161C (en) | 2003-11-01 | 2003-11-01 | Dye sensitized solar cell and its battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101120322A CN100358161C (en) | 2003-11-01 | 2003-11-01 | Dye sensitized solar cell and its battery |
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| Publication Number | Publication Date |
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| CN1612361A CN1612361A (en) | 2005-05-04 |
| CN100358161C true CN100358161C (en) | 2007-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101120322A Expired - Fee Related CN100358161C (en) | 2003-11-01 | 2003-11-01 | Dye sensitized solar cell and its battery |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008084762A (en) * | 2006-09-28 | 2008-04-10 | Tdk Corp | Photoelectric conversion element and its manufacturing method |
| CN102254700B (en) * | 2011-05-13 | 2012-11-28 | 西安交通大学 | Light side entry type dye sensitized solar battery pack with laminated structure and manufacturing process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349665A (en) * | 1999-12-27 | 2002-05-15 | 精工爱普生株式会社 | Solar cell and solar cell unit |
| US6441300B2 (en) * | 2000-05-15 | 2002-08-27 | Sharp Kabushiki Kaisha | Solar battery module |
| CN1373906A (en) * | 2000-10-20 | 2002-10-09 | 中田仗祐 | Light-emitting or light-detecting semicondctor module and method of manufacture therefor |
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2003
- 2003-11-01 CN CNB2003101120322A patent/CN100358161C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349665A (en) * | 1999-12-27 | 2002-05-15 | 精工爱普生株式会社 | Solar cell and solar cell unit |
| US6441300B2 (en) * | 2000-05-15 | 2002-08-27 | Sharp Kabushiki Kaisha | Solar battery module |
| CN1373906A (en) * | 2000-10-20 | 2002-10-09 | 中田仗祐 | Light-emitting or light-detecting semicondctor module and method of manufacture therefor |
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| Publication number | Publication date |
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| CN1612361A (en) | 2005-05-04 |
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