CN1731591A - Piling type modular for dye sensitized solar cell - Google Patents
Piling type modular for dye sensitized solar cell Download PDFInfo
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- CN1731591A CN1731591A CN 200410095425 CN200410095425A CN1731591A CN 1731591 A CN1731591 A CN 1731591A CN 200410095425 CN200410095425 CN 200410095425 CN 200410095425 A CN200410095425 A CN 200410095425A CN 1731591 A CN1731591 A CN 1731591A
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- substrate
- dye
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- solar cell
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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 present invention provide a piling type modular of dye-sensitized solar cell. The piling type modular of dye-sensitized solar cell has several unit cell blocks, a protruding part of an unit cell block connected by thest unit cell blocks is inserted in a concave part of another unit cell block and being electric connection each other. The unit cell block includes two transparent first substrates which the positon is opposite, a transparent second substrate interleaving with the first substrates and disposed in the first substrate, so the concave part is formed by the protruding part of the first substrate opposite to the second substrate in the same direction, and the concave part is formed by the protruding part of the first substrate opposite to the second substrate in another direction, two dye-sensitized film opposite to the electrode, a electrolyte disposed between the dye-sensitized film and the electrode, a transparent conductive film extending outside of the sealing part.
Description
The present application claims priority of korean patent application No. 2004-.
Technical Field
The present invention relates to a solar cell, and more particularly, to a solar cell module which can be easily assembled and has high energy conversion efficiency by configuring unit blocks of a dye-sensitized solar cell into a barrier-high block type.
Background
Dye-sensitized solar cells (dye-sensitized solar cells) are photoelectrochemical solar cells including photosensitive dye molecules capable of generating electron-hole pairs by absorbing visible light, and transition metal oxides capable of transporting the generated electrons as main constituent materials. A representative example of such dye-sensitized solar cells is the photoelectrochemical solar cell proposed by Michael Gratzel et al. Such a dye-sensitized solar cell is inexpensive compared to a silicon solar cell, and has an energy conversion efficiency of about 10%. Therefore, it is a promising next-generation solar cell that can replace the existing silicon solar cell.
The solar cell is represented as a module of a solar cell, which includes a first substrate, a transparent second substrate, and a semiconductor layer having a dye layer attached thereon, and the first substrate has a conductive layer formed thereon or has conductivity itself. The power output of the dye-sensitized solar cell can be increased by forming a module using several unit cells connected in series or in parallel.
However, in order to connect such unit cells, another process of connecting or contacting the unit cells using wires is required after preparing each unit cell. Due to such a connecting process or a contacting process, the entire process of manufacturing the module may be complicated. In addition, since a continuous manufacturing process is substantially impossible, productivity is reduced.
Disclosure of Invention
The present invention provides a module of a dye-sensitized solar cell having relatively high energy conversion efficiency per unit area, wherein the module of the dye-sensitized solar cell is composed of unit cell blocks that are easily and conveniently connected in series or in parallel.
According to an aspect of the present invention, there is provided a barrier type module of a dye-sensitized solar cell, which is composed of a plurality of unit cell blocks connected such that a convex portion of one unit cell block is inserted into a concave portion of another unit cell block and electrically connected to each other. The unit cell block includes two transparent first substrates arranged opposite to each other; a transparent second substrate disposed between the first substrates, the second substrate being disposed in a staggered manner such that convex portions are formed in one direction by the second substrate relatively protruding with respect to the first substrate, and concave portions are formed in the other direction by the first substrate relatively protruding with respect to the second substrate; a sealing portion disposed between the first substrate and the second substrate suchthat a space is formed between the first substrate and the second substrate; two transparent electrodes respectively disposed on the surface of the first substrate or the second substrate and opposed to the inner side of the sealing portion; two dye-sensitized films opposed to each other between the two transparent electrodes; an electrolyte disposed between the dye-sensitized film and the transparent electrode; and a transparent conductive film provided between the substrate and the dye-sensitized film and between the substrate and the transparent electrode. The transparent conductive film extends to the outside of the sealing portion.
The first substrate and the second substrate may have a quadrangular planar shape of the same size, and only one side of the second substrate protrudes relatively to form a convex portion.
Alternatively, the first substrate and the second substrate may have a quadrilateral planar shape of the same size, and two adjacent sides of the second substrate may protrude relatively to form a convex portion.
One first conductive film of the conductive films may extend to the second substrate forming the convex portion, and one second conductive film of the conductive films may extend to the first substrate forming the concave portion. The first conductive film of one first unit cell block is electrically connected to the second conductive film of another second unit cell block among the unit cell blocks.
According to the present invention, there is provided a barrier type module of a transparent, dye-sensitized solar cell, in which unit cell blocks are easily connected in series or parallel, and the dye-sensitized solar cell module has high energy conversion efficiency per unit area, which is about twice as high as that of a conventional unit cell module.
Drawings
The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:
FIGS. 1A and 1B illustrate a unit cell block of a dye-sensitized solar cell according to the present invention
A cross-sectional view of an embodiment;
FIGS. 2A and 2B illustrate a unit cell block of a dye-sensitized solar cell according to the present invention
A perspective view of an embodiment;
fig. 3A and 3B illustrate cross-sectional views of embodiments of a dye-sensitized solar cell module according to the present invention; and
fig. 4A and 4B illustrate plan views of embodiments of the dye-sensitized solar cell module according to the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those skilled in the art. In the drawings, the thickness of layers and regions are exaggerated for clarity. Like reference numerals refer to like elements throughout the specification.
The unit cell block of the solar cell according to the embodiment of the present invention is configured to include a side portion having a concave portion and a convex portion opposite to the concave portion, thereby connecting the unit cell blocks to each other in a barrier type. The protrusion of one unit cell block is inserted into the recess of the other unit cell block. The two unit cell blocks are electrically connected to each other by the above insertion. Thus, the module of the dye-sensitized solar cell can be formed only by inserting the convex portion of one unit cell block into the concave portion of another unit cell block. In the present specification, "rampart high (Lego)" means a trademark of a children's toy produced by Lego limited (denmark). "lego-type" means a product that can be easily connected to each other or built.
FIGS. 1A and 1B illustrate a unit cell block of a dye-sensitized solar cell according to the present invention
Cross-sectional view of an embodiment.
Referring to fig. 1A and 1B, a unit cell block of a module of a dye-sensitized solar cell according to an embodiment of the present invention includes: two transparent first substrates 130 arranged opposite to each other; a transparent second substrate 110 disposed between the first substrates; a sealing portion 600 disposed between the first substrate 130 and the second substrate 110 such that a space is formed between the first substrate and the second substrate; two transparent electrodes 500; two dye-sensitized films 300 respectively disposed on the electrodes 500 and facing each other; an electrolyte 400 disposed between the dye-sensitized film 300 and the electrode 500; and four transparent conductive films 210 and 230 disposed between the substrates 130 and 110 and the dye-sensitized film 300 and/or between the substrates 130 and 110 and the electrode 500, which extend to the outside of the sealing part 600.
In this case, the transparent electrode 500 may be formed on the first conductive film 210 disposed on the second substrate 110 as shown in fig. 1A, or on the second conductive film 230 disposed on the first substrate 130 as shown in fig. 1B.
The second substrates 110 are disposed between the first substrates 130 in such a manner that the second substrates are disposed in a staggered manner as shown in fig. 1A and 1B. In this manner, the second substrate protrudes from the first substrate 130 to form the convex portion 810. In contrast, the first substrate 130 protrudes from the second substrate 110 in the other direction to form the concave portion 850.
As shown in fig. 1A and 1B, one unit cell block has a convex portion 810 and a concave portion 850 that are opposed to each other. Several unit cell blocks may be connected by inserting the protrusion 810 into the recess 850 in the same manner as the assembled rampart block.
In this case, first latch projection 811 is provided on convex portion 810 and second latch projection 851 is provided in concave portion 850, so that the unit cell blocks can be easily connected by first latch projection 811 and second latch projection 851. The first and second latch projections 811 and 851 are made of a metal conductive material and serve as engagement members of the unit cell blocks.
The sealing portion 600 is disposed between the substrates 130, 110 for connecting the substrates 130, 110 to each other and preventing the liquid-type electrolyte 400 from flowing out. The seal portion 600 is constructed of a thermoplastic polymeric material such as surlyn (product of dupont llc, usa under the reference No. 1702). An example of electrolyte 400 can be an iodide-based redox liquid electrolyte, such as I comprising 0.8M 1, 2-dimethyl-3-octyl-imidazolium iodide (1, 2-dimethyl-3-octyi-imidazolium iodide) dissolved in 3-methoxypropionitrile and 40mM iodine3-/I-And (3) solution.
The first substrate 130 and/or the second substrate 110 are made of transparent glass or plastic. The transparent films 210, 230 disposed on the substrates 110, 130 are made of indium tin oxide (ito) or fluorine-doped tin dioxide (tin dioxide). The substrate may be formed by using indium tin oxide or fluorine-doped tin dioxide (SnO)2) A transparent polymer or plastic plate is coated, wherein the transparent polymer or plastic plate is made of polyethylene terephthalate (polyethyleneterephthalate), polycarbonate, polyimide, polyethylene naphthalate (polyethylenenaphthalate), or polyethersulfone (polyethylenesulfone).
The electrode 500 may be formed on the first substrate 210 or the second substrate 230. For example, the electrode may comprise a layer of platinum. The transparent platinum layer may be formed, for example, by5mM hexachloroplatinic acid (H)2PtCl6·xH2O) solution was dispersed on the above-mentioned transparent substrate and dried to coat platinum ions, and the platinum ion-coated substrate was coated with 60mM sodium borohydride (NaBH)4) The treatment is to reduce the platinum metal, wash it with distilled water, and dry it. In addition, if the substrate is made of glass, a transparent platinum layer may be formed by dispersing a 5mM hexachloroplatinic acid solution and heating it at a temperature of about 450 ℃ in an electric furnace.
The dye-sensitized film 300 opposite to the platinum electrode 500 is prepared by forming a transparent film using nano-sized oxide particles of 10 to 20 nm. Such a layer of nano-sized oxide particles may be formed by using a selected packageTitanium dioxide (TiO)2) Tin dioxide (SnO)2) Zinc oxide (ZnO) of 5 to 15 nm. A ruthenium (ruthenium) complex is chemisorbed into the nano-sized oxide particle layer to form the dye-sensitized film 300.
Meanwhile, the dye-sensitized solar cell according to the present invention operates in the manner described below. Light sequentially passes through the substrate and the platinum layer as an electrode layer to reach the dye molecules absorbed into the nano-sized oxide particles, and may be absorbed into the dye molecules. The dye molecules that absorb light can transition from a ground state to an excited state and form electron-hole pairs. The excited electrons can migrate through the interfaces between the particles to an electrode adjacent to the nanosized oxide. The oxidized dye molecule obtained by electron transition can accept iodide ion in electrolyte ( ) The electrons provided by oxidation of (2) are reduced. Oxidized iodide ion (I)3-) Can be reduced by electrons reaching the electrodes.
The solar cell block shown in fig. 1A and 1B includes two sub solar cell blocks formed on both sides of the second substrate 110 disposed at the center. Therefore, when the visible light 700 irradiates both sides of the second substrate 110, the solar cell block according to the present invention can generate current for all incident visible light 700. As a result, the energy conversion efficiency per unit area of the solar cell block according to the present invention may increase to about two times.
Fig. 2A and 2B illustrate perspective views of a unit cell block of a dye-sensitized solar cell according to an embodiment of the present invention.
As shown in fig. 2A, in the case of the unit cell block of the solar cell according to the present invention, the first substrate 130 and the second substrate 110 may be formed to have a quadrangular planar shape having the same size, and the second substrate 110 may be disposed between the first substrates in such a manner that one side of the second substrate forms the convex part 810. Thus, a concave portion 850 is formed on the other side, facing opposite to the convex portion 810. By inserting the convex portions 810 into the concave portions 850 as described above, such unit cell blocks can be connected in series in one direction as a chain to form a module.
As shown in fig. 2B, in the case of the unit cell block of the solar cell according to the present invention, the first substrate 130 and the second substrate 110 may be formed to have a quadrangular planar shape having the same size, and the second substrate 110 may be disposed between the first substrates in such a manner that the convex parts 810' are formed at both sides of the second substrate 110. Thus, a concave portion 850 'facing opposite to the convex portion 810' is formed at the other side. In such a manner that the protrusions 810 'are inserted into the recesses 850', the unit cell blocks can be connected in series in one direction like a tile to form a module.
Fig. 3A and 3B illustrate cross-sectional views of modules of dye-sensitized solar cells according to embodiments of the present invention.
Referring to fig. 3A, as shown in fig. 3A, a module of a dye-sensitized solar cell is formed by sequentially connecting and bonding several unit cell blocks identical to those shown in fig. 1A according to an embodiment of the present invention. A module of the dye-sensitized solar cell may be formed by inserting the convex part 810 of the first unit cell block 1310 into the concave part 850 of the second unit cell block 1320 to form electrical connection.
In this case, the unit battery blocks 1310, 1320 are coupled to each other by the latches provided with the first latch projections 811 and the second latch projections 851. In addition, the first conductive film 210 of the first unit cell block 1310 is electrically connected to the second conductive film 230 of the second unit cell block 1320 by the first and second latch protrusions 811and 851, which are connected to each other. Such electrical connection may be made by connecting the unit cell blocks in series or in parallel via (+), (-) polarities.
Referring to fig. 3B, as shown in fig. 3B, a module of a dye-sensitized solar cell may be formed by connecting in series several unit cell blocks identical to those shown in fig. 1 according to an embodiment of the present invention.
In addition, the first unit cell block shown in fig. 1A may be connected in series to the second unit cell block shown in fig. 1B.
Fig. 4A and 4B illustrate plan views of modules of dye-sensitized solar cells according to embodiments of the present invention.
Referring to fig. 4A, as shown in fig. 4A, a module of a dye-sensitized solar cell may be formed by chain-connecting the same several unit cell blocks as shown in fig. 2A according to an embodiment of the present invention in series. A module of the dye-sensitized solar cell may be formed by connecting the second unit cell block 1420 to one side of the first unit cell block 1410 in series, for example, in a chain shape.
Referring to fig. 4B, as shown in fig. 4B, a module of the dye-sensitized solar cell may be formed by connecting the same several unit cell blocks as shown in fig. 2B according to an embodiment of the present invention in series like a tile. The module of the dye-sensitized solar cell may be formed by connecting the second unit cell block 1440 in series to one of both sides of the first unit cell block 1430 in both directions in such a manner that a tile type module may be formed.
According to the present invention, several unit cell blocks of the dye-sensitized solar cell module can be easily and conveniently connected in series or in parallel, because the unit cell blocks can be easily connected or joined as high as barrier height. As a result,a module of a transparent dye-sensitized solar cell having high energy conversion efficiency increased to two times as compared with a conventional solar cell unit is also provided.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A barrier module of a dye-sensitized solar cell, comprising a plurality of unit cell blocks connected such that a convex portion of one unit cell block is inserted into a concave portion of another unit cell block and electrically connected to each other, wherein the unit cell block comprises:
two transparent first substrates arranged opposite to each other;
transparent second substrates disposed between the first substrates, the second substrates being disposed in a staggered manner such that convex portions are formed in one direction by the second substrates protruding relatively to the first substrates, and concave portions are formed in the other direction by the first substrates protruding relatively to the second substrates;
a sealing portion disposed between the first substrate and the second substrate such that a space is formed between the first substrate and the second substrate;
two transparent electrodes disposed on a surface of the first substrate or the second substrate, respectively, opposite to an inner side of the sealing portion;
two dye-sensitized films disposed between the two electrodes to face each other;
an electrolyte disposed between the dye-sensitized membrane and the electrode; and
and a transparent conductive film disposed between the substrate and the dye-sensitized film and between the substrate and the electrode, the transparent conductive film extending to the outside of the sealing portion.
2. The barrier height module of a dye-sensitized solar cell according to claim 1, wherein the first substrate and the second substrate have a quadrangular planar shape of the same size, and only one side of the second substrate relatively protrudes to form a convex portion.
3. The barrier height module of a dye-sensitized solar cell according to claim 1, wherein the first substrate and the second substrate have a quadrangular planar shape of the same size, and two adjacent sides of the second substrate protrude oppositely to form a convex portion.
4. The barrier height type module of a dye-sensitized solar cell according to claim 1, wherein one first conductive film of the conductive films extends to the second substrate forming the convex portion, and one second conductive film of the conductive films extends to the first substrate forming the concave portion, and the first conductive film of one first unit cell block of the unit cell blocks is electrically connected to the second conductive film of another second unit cell block.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR61426/04 | 2004-08-04 | ||
| KR1020040061426A KR100567331B1 (en) | 2004-08-04 | 2004-08-04 | Lego-type module of dye-sensitized solar cells |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1731591A true CN1731591A (en) | 2006-02-08 |
| CN100433370C CN100433370C (en) | 2008-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100954251A Expired - Fee Related CN100433370C (en) | 2004-08-04 | 2004-12-13 | Piling type modular for dye sensitized solar cell |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4280707B2 (en) |
| KR (1) | KR100567331B1 (en) |
| CN (1) | CN100433370C (en) |
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| CN102084496A (en) * | 2008-07-07 | 2011-06-01 | 株式会社东进世美肯 | Dye-sensitized solar cell or submodule and submodule packaging method |
| CN102282681A (en) * | 2009-01-19 | 2011-12-14 | 提莫科技有限公司 | Series/parallel combination type dye-sensitized solar cell module |
| CN102456480A (en) * | 2010-10-20 | 2012-05-16 | 财团法人工业技术研究院 | Solar cell structure |
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2004
- 2004-08-04 KR KR1020040061426A patent/KR100567331B1/en not_active IP Right Cessation
- 2004-12-13 CN CNB2004100954251A patent/CN100433370C/en not_active Expired - Fee Related
- 2004-12-28 JP JP2004381467A patent/JP4280707B2/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2006049268A (en) | 2006-02-16 |
| KR20060012786A (en) | 2006-02-09 |
| JP4280707B2 (en) | 2009-06-17 |
| CN100433370C (en) | 2008-11-12 |
| KR100567331B1 (en) | 2006-04-04 |
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