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Dye-sensitized solar cell

A solar cell and pigment sensitization technology, applied in circuits, capacitors, photovoltaic power generation, etc., can solve the problem of reducing the power generation efficiency of solar cells, and achieve the effect of improving power generation efficiency

Inactive Publication Date: 2011-09-21
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the power generation efficiency of the dye-sensitized solar cell decreases.

Method used

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  • Dye-sensitized solar cell

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0041] First, a first embodiment of the present invention will be described with reference to the drawings. In the dye-sensitized solar cell 101 according to the first embodiment, as figure 1 As shown, for example, a transparent conductive film 120 as a first electrode made of indium tin oxide (ITO) or fluorine-doped tin oxide (FTO) is formed on a transparent first substrate 110 made of glass or film. The transparent conductive film 120 may be patterned. In addition, a current collecting pattern of silver or the like may be provided on an upper layer or a lower layer of the transparent conductive film 120 . An electron trapping-pigment layer 130 is formed on the transparent conductive film 120 . The details of the electron-trapping-dye layer 130 will be described later.

[0042] On the other hand, a conductive film 150 as a second electrode is formed on a transparent second substrate 140 made of, for example, glass or a film, which is opposed to the first substrate 110 . F...

Embodiment

[0054] Next, an example of the dye-sensitized solar cell 101 of the first embodiment will be described. Here, for the dye-sensitized solar cell 101 ( Figure 4B ) and a dye-sensitized solar cell 190 ( Figure 4A ) properties were compared. Compared is the value of the fill factor (FF), which is the ratio of the actual power to the apparent maximum power.

[0055] In this example, the average diameter of titanium oxide serving as the electron transfer particles 134 was 100 nm, and the average diameter of titanium oxide serving as the dye-adsorbing particles 136 was 10 nm. That is, the electron transfer particles 134 and the dye-adsorbing particles 136 have the same material, but the diameters differ by more than one digit (10 times). Furthermore, the mixing ratio of the electron transfer particles 134 and the dye-adsorbed particles 136 was set to be 75% by weight of the electron transfer particles 134 and 25% by the dye-adsorbed particles 136 . The average thickness of the ...

no. 2 Embodiment approach

[0064] A second embodiment of the present invention will be described with reference to the drawings. In the dye-sensitized solar cell 201 according to the second embodiment, as Figure 5 As shown, on the surface (first surface) of a transparent first substrate 210 made of, for example, glass or a film, a layer made of indium tin oxide (ITO) or fluorine-doped tin oxide (FTO) is formed as the first substrate. The transparent conductive film 220 of the electrode. The transparent conductive film 220 may be patterned, and a current collecting pattern of silver or the like may be provided on an upper layer or a lower layer of the transparent conductive film 220 . An electron trapping-pigment layer 230 is formed on the transparent conductive film 220 .

[0065] The electron-trapping-dye layer 230 has, for example, an electron-trapping agent made of anatase-type titanium oxide particles, and a dye made of a ruthenium dye (such as N719 dye). The diameter of the electron trap is, fo...

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Abstract

A dye-sensitized solar cell includes a first electrode, a second electrode, an electron-collector / dye layer, and an electron donor. The second electrode faces the first electrode. The electron-collector / dye layer provided on the first electrode includes an electron collector and dye. The electron collector includes first electron collector grains and second electron collector grains. The first electron collector grains have a diameter or diameters within a first diameter range and the second electron collector grains have a diameter or diameters within a second diameter range. A minimum value of the second diameter range is greater than a maximum value of the first diameter range. The electron donor is provided between the electron-collector / dye layer and the second electrode.

Description

[0001] cross-referenced literature [0002] This application is based on and claims priority from Japanese Patent Application No. 2010-048286 filed on March 4, 2010 and Japanese Patent Application No. 2010-070574 filed on March 25, 2010, both of which are incorporated herein by reference The entire content is for reference. technical field [0003] The present invention relates to a dye-sensitized solar cell. Background technique [0004] In recent years, photovoltaic power generation that utilizes cheap and clean natural energy in harmony with the environment has attracted attention. As solar cells, cells using silicon crystals are gradually being put into practical use, but the energy consumption required for manufacture is large. On the other hand, compared with solar cells using silicon crystals, various dye-sensitized solar cells disclosed in JP 2008-41258 A have the advantages of being able to produce large-area elements at low cost and obtain flexible cells. The ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/004H01G9/04H01G9/042H01G9/20H01M14/00
CPCH01L31/0236H01L31/0224H01G9/20Y02E10/50Y02E10/542H01G9/2031
Inventor 小林君平马场干男荒井则博
Owner CASIO COMPUTER CO LTD