CN101826400A - Dye-sensitized solar cell - Google Patents
Dye-sensitized solar cell Download PDFInfo
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- CN101826400A CN101826400A CN200910046904A CN200910046904A CN101826400A CN 101826400 A CN101826400 A CN 101826400A CN 200910046904 A CN200910046904 A CN 200910046904A CN 200910046904 A CN200910046904 A CN 200910046904A CN 101826400 A CN101826400 A CN 101826400A
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- electrode
- reflection layer
- dssc
- dye
- layer
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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
Abstract
The invention relates to a dye-sensitized solar cell, which comprises a counter electrodes consisting of a conducting substrate, wherein the outer side of the counter electrode is provided with a light reflection layer which is a silver layer or an aluminum layer. By adopting the technical proposal of the invention, the outer side of the counter electrode of the dye-sensitized solar cell is provided with the light reflection layer, thus the counter electrode has good light reflectivity, unabsorbed solar ray in the original dye-sensitized solar cell is reflected to the cell, the unabsorbed solar ray can be fully utilized, and the photo-electricity conversion efficiency can be improved.
Description
Technical field:
The present invention relates to a kind of solar cell, specifically, relate to a kind of DSSC that has novel to electrode structure.
Background technology
Dye-sensitized nano film solar battery be 1991 by Swiss Federal Institute of Technology
A kind of brand-new photochemistry solar cell that professor proposes, it usually by dye sensitization light anode, contain I
-/ I3
-The electrolyte solution of oxidation-reduction pair and electrode constituted.It is lower to have cost, and preparation technology is simple, and Environmental compatibility has good application prospects preferably.The design that research at present mainly concentrates on the dye sensitization agent molecule and synthetic, electronics are at nano titanium oxide (TiO
2) interior transmission characteristic and the theoretical model research of perforated membrane, and the development of accurate solid-state and solid electrolyte etc., then less relatively about dye-sensitized nano film solar battery to the research of electrode.
Because the transparency of conductive substrates, make a part of light from dye-sensitized cell, see through and can not effectively be absorbed that this has just wasted the energy of a lot of sunlights.By increase the TiO of rutile crystal type at the back side of dye sensitization light anode with high reflectance
2With in film, mix a spot of bulky grain TiO of people
2Increase the propagation path of light, can increase the light absorption of battery at long wave limit.But the increase of back reflection layer thickness can hinder the transmission of electrolyte in nano-porous film, if the excessive absorption amount that also can influence dyestuff at titanium dioxide of doping bulky grain.By on to electrode, plating the thicker platinum film of one deck, form one deck platinum mirror and also have the light reflex, but, therefore be unsuitable for extensive popularization because platinum is noble metal, and cost is higher.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of novel cheaply to the electrode DSSC, reflect by light, further increase the propagation path of light in battery, can increase of the absorption of sensitization battery, thereby realize the purpose of the photoelectric conversion efficiency of raising solar cell light.
In order to achieve the above object, technical scheme of the present invention is as follows:
A kind of DSSC, comprise by conductive substrates form to electrode, the described outside to electrode has reflection layer.
Described conductive substrates is FTO electro-conductive glass or ITO-PET or ITO-PEN.
Described inboard to electrode has platinum layer.
Described reflection layer is silver layer or aluminium lamination.
The thickness of described reflection layer is 10～200nm.
Described reflection layer is by the method preparation of sputter or evaporation or electrochemistry plating.
A kind of preparation method of DSSC comprises:
(1) on the conductive substrates that cleans up, obtain to have reflection layer to electrode.
(2) with the titanium dioxide anode pickling in dyestuff, obtain dye sensitization light anode.
(3) will inject electrolyte to electrode and the assembling of dye sensitization light anode, obtain having the light reflection
Layer is to the dye-sensitized cell of electrode structure.
Adopt technical scheme of the present invention, the outside to electrode of DSSC has reflection layer, make electrode is had good light reflective properties, again reflex to not absorbent sunray in the battery, can make full use of unabsorbed sunray, realize improving the purpose of electricity conversion.
Description of drawings
Fig. 1 is the structural representation with DSSC of reflection layer of the present invention;
Fig. 2 is the fundamental diagram that does not have the DSSC of reflection layer in the prior art;
Fig. 3 is the fundamental diagram with DSSC of reflection layer of the present invention.
Embodiment:
According to Fig. 1 to Fig. 3, provide preferred embodiment of the present invention, and described in detail below, enable to understand better function of the present invention, characteristics.
As shown in Figure 1, DSSC of the present invention, work electrode comprises light anode 1 and to electrode 3, light anode 1 comprises wide bandgap semiconductor dye sensitization titanium deoxid film 4.By conductive substrates 7, transparency conducting layer 6, outside reflection layer 8, inboard have the platinum layer 5 of catalytic action and form to electrode.Conductive substrates 7 can be the ITO-PET (indium tin oxide-polyethylene terephthalate) of flexibility, ITO-PEN (indium tin oxide-PEN), or the fluorine-doped tin dioxide electro-conductive glass of rigidity (FTO electro-conductive glass) etc.Reflection layer 8 is in the outside of electrically conducting transparent substrate, and the inboard of electrically conducting transparent substrate 7 is the platinum layer 5 with efficient catalytic efficient.The surface of having adsorbed the wide bandgap semiconductor titanium dioxide of dyestuff, add electrolyte 2, with the platinum plating that contains reflection layer to electrode 3 sandwich structure consistings, form a sandwich shape, be packaged into DSSC of the present invention by hot melt adhesive film.
Among the present invention, the broad stopband titanium dioxide film adopts nano titanium dioxide film, obtains by technological means such as silk screen printings.Dyestuff is the N719 that contains ruthenium, N3, Z907, black dyestuff; Be the dyestuff that does not contain ruthenium perhaps, as phthalocyanines, indoles, porphyrin class dyestuff.Electrolyte 2 can be semisolid or liquid electrolyte.Make Spacer with the Surlyn1702 adhesive tape, Spacer is placed on dye sensitization light anode and between the electrode, making up and down, two plate electrodes form a space, be heated to 120 ℃, by heating two electrodes are adhered to one, the titanium dioxide photo anode of realization process dye sensitization and Pt are to the encapsulation of electrode.
As shown in Figure 2, prior art under the situation that does not add reflection layer 8 because the transparency of conductive substrates 7, light penetration glass can not effectively be absorbed, the electricity conversion of solar cell is lower.And as shown in Figure 3, at the dye-sensitized cell of routine electrode 3 is added with the structure that one deck has reflection layer 8, utilization has the thin layer of light reflective properties to the outside on the electrode 3, to reflect back in the battery once more through unabsorbed sunlight in the dye-sensitized cell, realization can improve the electricity conversion of dye-sensitized cell to the abundant absorption of solar energy.
The thickness of reflection layer 8 is between 10～200nm.In general, yes is the bigger the better in the value to the reflection layer thickness of electrode, but thickness is big more, then can cost high more.If the thickness of reflection layer film is too thin, then can not play a reflecting effect preferably.
The preparation of reflection layer 8 generally is by sputter, evaporation, and methods such as electrochemical deposition obtain.Its preparation process is that conductive substrates is cleaned in ultrasonic cleaner, and it is indoor to be placed on magnetron sputtering, adds silver-colored target or aluminium target preparation sputter in the chamber, sputter one deck silverskin or aluminium film on ITO-PET or ITO-PEN.Can change technological parameter by preparation condition, change the thickness in reflector easily.
Embodiment one
On the conducting surface on the electro-conductive glass, use thermal decomposition method to prepare the platinum layer that plays catalytic action.By the method for vacuum evaporation, the lateral surface preparation of electrode had the silver layer of reflection layer at Pt.
The particle diameter that grinding is obtained is 20nm left and right sides TiO
2Colloid is coated on the electro-conductive glass of nesa coating uniformly, obtains the thick TiO of 10-14 μ m by the method that heats in Muffle furnace
2Membrane electrode.The titanium dioxide transparent conductive film is lowered the temperature after treatment naturally, when temperature is reduced to 80 ℃, is immersed in the dye solution, and used dyestuff is black dyestuff, and soak time is 24 hours, obtains the titanium dioxide photo anode through dye sensitization.Make Spacer with the Surlyn1702 adhesive tape simultaneously, Spacer is placed on the light anode and contain reflection layer between the electrode, making up and down, two plate electrodes form a space, be heated to 120 ℃, by heating two electrodes are adhered to one, the liquid electrolyte that reinjects is realized through the titanium dioxide photo anode of dye sensitization and Pt the encapsulation of electrode is obtained dye-sensitized cell.
Embodiment two
On the ITO-PET of flexibility, play the platinum layer of catalytic action, on magnetic control sputtering device,, the lateral surface preparation of electrode is had the aluminium lamination of reflection layer at Pt by the method for sputter by method deposition one deck of electrochemical deposition.
With particle diameter is 20nm left and right sides TiO
2Colloid is coated on the conductive substrates of nesa coating uniformly, is heated to 130 ℃, obtains the thick TiO of 10-14 μ m
2Membrane electrode.The titanium dioxide transparent conductive film is through after the heat treatment process, and cooling when temperature is reduced to 80 ℃, is immersed in the dye solution naturally, and used soak time is 24 hours in order to deceive dyestuff, obtains the titanium dioxide photo anode through dye sensitization.Make Spacer with the Surlyn1702 adhesive tape simultaneously, Spacer is placed on the light anode and contain reflection layer between the electrode, making up and down, two plate electrodes form a space, be heated to 120 ℃, by heating two electrodes are adhered to one, the liquid electrolyte that reinjects is realized through the titanium dioxide photo anode of dye sensitization and Pt the encapsulation of electrode is obtained dye-sensitized cell.
Embodiment three
On the ITO-PEN of flexibility substrate, play the platinum layer of catalytic action,, the lateral surface preparation of electrode is had the aluminium lamination of reflection layer at Pt by the method for magnetron sputtering by method deposition one deck of electrochemical deposition.
The particle diameter that grinding is obtained is 20nm left and right sides TiO
2Colloid is coated on the electro-conductive glass of nesa coating uniformly, obtains the thick TiO of 10-14 μ m by the method that heats
2Membrane electrode.The titanium dioxide transparent conductive film is lowered the temperature after treatment naturally, and electrode is immersed in the dye solution, and used dyestuff is a porphyrin class dyestuff (ZnP-1), and soak time is 24 hours, obtains the titanium dioxide photo anode through dye sensitization.Inject the semisolid electrolyte, make Spacer with the Surlyn1702 adhesive tape, Spacer is placed on the light anode and contain reflection layer between the electrode, making up and down, two plate electrodes form a space, be heated to 120 ℃, by heating two electrodes are adhered to one, the titanium dioxide photo anode of realization process dye sensitization and Pt obtain having the flexible semi-solid dye-sensitized cell cheaply of reflection layer to the encapsulation of electrode.
Advantage of the present invention is: the technical scheme to electrode interpolation reflection layer that discloses a kind of DSSC, by at platinum the electrode outside being added silver layer or the aluminium lamination that last layer has high reflectance, play unabsorbed light in the battery is reflected back in the battery again, improve the efficiency of light absorption of DSSC, reach the purpose that improves electricity conversion. It can be by sputter, evaporation, the preparation methods such as electrochemical deposition, the metallic film that obtains having the high reflection layer performance in the outside to electrode. Preparation technology is simple, and is with low cost, can be by the kind of the different films of change, and the factors such as thickness, Effective Raise obtains having the dye-sensitized cell of high conversion efficiency to the absorption of sunray.
Claims (9)
1. DSSC, comprise by conductive substrates form to electrode, it is characterized in that the described outside to electrode has reflection layer.
2. according to the described DSSC of claim 1, it is characterized in that described conductive substrates is FTO electro-conductive glass or ITO-PET or ITO-PEN.
3. according to the described DSSC of claim 1, it is characterized in that described inboard to electrode has platinum layer.
4. according to claim 1 or 2 or 3 described DSSC, it is characterized in that described reflection layer is a silver layer.
5. according to claim 1 or 2 or 3 described DSSC, it is characterized in that described reflection layer is an aluminium lamination.
6. according to the described DSSC of claim 1, it is characterized in that the thickness of described reflection layer is 10～200nm.
7. according to the described DSSC of claim 1, it is characterized in that described reflection layer is to be applied to the described outside to electrode by sputter or evaporation or electrochemistry plating.
8. the preparation method of a DSSC is characterized in that, comprising:
(1) on the conductive substrates that cleans up, obtain to have reflection layer to electrode;
(2) with the titanium dioxide anode pickling in dyestuff, obtain dye sensitization light anode;
(3) will inject electrolyte to electrode and the assembling of dye sensitization light anode, obtain to have the dye-sensitized cell of reflection layer electrode structure.
9. the preparation method of DSSC according to claim 8 is characterized in that, in the step (1), described reflection layer is applied to the described outside to electrode by sputter or evaporation or electrochemistry plating.
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| CN200910046904A CN101826400A (en) | 2009-03-03 | 2009-03-03 | Dye-sensitized solar cell |
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| CN200910046904A CN101826400A (en) | 2009-03-03 | 2009-03-03 | Dye-sensitized solar cell |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013329A (en) * | 2010-11-03 | 2011-04-13 | 上海联孚新能源科技有限公司 | Method for improving optical energy conversion rate of dye sensitized solar cell |
| CN103177881A (en) * | 2013-03-16 | 2013-06-26 | 南昌航空大学 | Preparation method of all-weather flexible piezoelectric-photovoltaic composite structure cell |
| CN104576065A (en) * | 2013-10-21 | 2015-04-29 | 河南科技大学 | Reticular dye-sensitized solar cell |
| CN104576067A (en) * | 2013-10-21 | 2015-04-29 | 河南科技大学 | Single-layer titanium mesh dye-sensitized solar cell |
| TWI489669B (en) * | 2012-06-21 | 2015-06-21 | Univ Nat Yunlin Sci & Tech | Dye-sensitized solar cell and method for fabricating the same |
| CN105575669A (en) * | 2016-03-05 | 2016-05-11 | 无锡南理工科技发展有限公司 | Dye-sensitized solar cell preparation method |
| CN105632770A (en) * | 2016-03-05 | 2016-06-01 | 无锡南理工科技发展有限公司 | Dye-sensitized solar cell |
| CN108597884A (en) * | 2018-04-19 | 2018-09-28 | 南昌航空大学 | A method of it preparing stereo colour using conductive metal adhesive tape combination electrochemistry desorption and is sensitized film |
| CN108735832A (en) * | 2018-05-28 | 2018-11-02 | 西安理工大学 | A kind of lateral isolation grid-type photoconductivity switching and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000348784A (en) * | 1999-06-07 | 2000-12-15 | Ricoh Co Ltd | Photoelectric transfer element and its manufacture |
| CN1697200A (en) * | 2004-05-13 | 2005-11-16 | 中国科学院化学研究所 | Electrode pair of dyestuff sensitized Nano crystal thin film of solar cell |
-
2009
- 2009-03-03 CN CN200910046904A patent/CN101826400A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000348784A (en) * | 1999-06-07 | 2000-12-15 | Ricoh Co Ltd | Photoelectric transfer element and its manufacture |
| CN1697200A (en) * | 2004-05-13 | 2005-11-16 | 中国科学院化学研究所 | Electrode pair of dyestuff sensitized Nano crystal thin film of solar cell |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013329A (en) * | 2010-11-03 | 2011-04-13 | 上海联孚新能源科技有限公司 | Method for improving optical energy conversion rate of dye sensitized solar cell |
| TWI489669B (en) * | 2012-06-21 | 2015-06-21 | Univ Nat Yunlin Sci & Tech | Dye-sensitized solar cell and method for fabricating the same |
| CN103177881A (en) * | 2013-03-16 | 2013-06-26 | 南昌航空大学 | Preparation method of all-weather flexible piezoelectric-photovoltaic composite structure cell |
| CN104576065A (en) * | 2013-10-21 | 2015-04-29 | 河南科技大学 | Reticular dye-sensitized solar cell |
| CN104576067A (en) * | 2013-10-21 | 2015-04-29 | 河南科技大学 | Single-layer titanium mesh dye-sensitized solar cell |
| CN105575669A (en) * | 2016-03-05 | 2016-05-11 | 无锡南理工科技发展有限公司 | Dye-sensitized solar cell preparation method |
| CN105632770A (en) * | 2016-03-05 | 2016-06-01 | 无锡南理工科技发展有限公司 | Dye-sensitized solar cell |
| CN108597884A (en) * | 2018-04-19 | 2018-09-28 | 南昌航空大学 | A method of it preparing stereo colour using conductive metal adhesive tape combination electrochemistry desorption and is sensitized film |
| CN108735832A (en) * | 2018-05-28 | 2018-11-02 | 西安理工大学 | A kind of lateral isolation grid-type photoconductivity switching and preparation method thereof |
| CN108735832B (en) * | 2018-05-28 | 2020-09-25 | 西安理工大学 | Transverse insulated gate type photoconductive switch and manufacturing method thereof |
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Application publication date: 20100908 |