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Metal oxide dispersion, metal oxide electrode film, and dye sensitized solar cell

A technology for solar cells and dye sensitization, which is applied in the field of metal oxide dispersions and can solve problems such as high manufacturing costs

Inactive Publication Date: 2007-02-07
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Currently, solar cells are mainly silicon-type solar cells, however, considering the toxic raw materials used, high manufacturing costs, etc., research is ongoing to develop new types of solar cells

Method used

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  • Metal oxide dispersion, metal oxide electrode film, and dye sensitized solar cell
  • Metal oxide dispersion, metal oxide electrode film, and dye sensitized solar cell
  • Metal oxide dispersion, metal oxide electrode film, and dye sensitized solar cell

Examples

Experimental program
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specific example

[0259] As the sensitizing dye supported on the surface of the metal oxide, dyes used in dye-sensitized solar cells can be widely used. Specific examples thereof include: ruthenium-biphenylazobisaminopyridine (bipyridium) complex, xanthene dyes, merocyanine dyes, porphyrin derivatives, and phthalocyanine derivatives. The sensitizing dye is loaded onto the photosensitive electrode by a generally used method of dissolving the sensitizing dye in alcohol and immersing the photosensitive electrode in the resulting solution. For the counter electrode used here, a material having a resistance of 2000Ω / □ or less and having catalytic activity can be used, and there is no limitation on whether it is transparent or not. Catalytic activity here refers to the electrolyte acting to reduce oxidation at the photosensitive electrode when a small overvoltage is applied across the counter electrode. In particular, platinum, ruthenium, graphite and carbon black have this function. Therefore, the...

example 1

[0311] Example 1: Dispersion including ethanol

[0312] 800cm in ball mill (AV, manufactured by Asahi Rika Seisakusho) 3 Add in the polyethylene container (ф96 * 133mm) of volume: 3g liquid-phase process titanium dioxide (Supertitania (registered trademark) G-2, manufactured by Showa Denko K.K.), its average primary particle diameter is 500nm; 9g titanium dioxide (Supertitania (registered trademark) ) F-4, manufactured by the same company), its average primary particle diameter is 30nm; 30g liquid phase process titanium dioxide sol; 2g water-soluble 1% N-vinylacetamide-sodium acrylate copolymer (VIAC GE-195, by Showa Denko K.K.) solution, 6 g of water, 50 g of ethanol (pure chemical reagent), and 500 g of 3ф zirconia balls were mixed at a rotation speed of 80 rpm for 12 hours to obtain a titanium dioxide liquid dispersion.

[0313] Two sheets of transparent conductive resin substrates (OTEC-110, manufactured by Tobi Co., Ltd., thickness: 125 μm) were prepared, and a contact a...

example 2

[0316] Example 2: Dispersion including butanol

[0317] Contact angles were evaluated, and solar cells were manufactured and evaluated in the same manner as in Example 1, except that 40 g of 2-methyl-2-propanol and 10 g of ethanol were used instead of 50 g of ethanol. However, the dispersions obtained are highly viscous and can be applied by rolling.

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Abstract

A metal oxide dispersion comprising metal oxide particles with a necking structure, and a solvent, wherein the liquid droplet contact angle of the metal oxide dispersion to an ITO film (Indium-Tin Oxide type film) formed is from 0 to 60 DEG . A metal oxide dispersion for the production of a dye-sensitized solar cell electrode, comprising Metal Oxide Particle Group F having a necking structure formed by m connected particles, Metal Oxide Particle Group G having only 0.2m or less connected particles, and a solvent, and being formable into a film at 200 DEG C or less. A metal oxide electrode comprising an electrically conducting substrate having thereon a metal oxide layer comprising metal oxide particles bound by a binder, wherein the binder content is from 0.005 to 5 mass% based on the metal oxide film and the metal oxide layer has a pencil scratch strength of H or more according to JIS5600.

Description

technical field [0001] The present invention relates to a metal oxide dispersion capable of producing an electrode suitable for a solar cell or the like, and a method for producing and coating the same. In addition, the present invention relates to an electrode having a metal oxide film having a high mechanical strength suitable for use in a solar cell or the like, a method of manufacturing the same, and use thereof. Background technique [0002] Currently, solar cells are mainly silicon-type solar cells, however, considering toxic raw materials used, high manufacturing costs, etc., research is ongoing to develop new types of solar cells. [0003] One type of solar cell that has been developed is the dye-sensitized solar cell. Since Graetzel et al. of EPFL-Lausanne proposed this cell in 1991 (see eg M. Graezel, Nature, 353, 737 (1991)), this solar cell has been developed as an alternative to silicon solar cells. [0004] Typically, dye-sensitized solar cells have figure 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01L31/04H01L31/18
CPCY02E10/542H01G9/2059H01G9/2036H01G9/2031Y10T428/31678Y02P70/50H01G9/20H01L31/04
Inventor 鹿山进胁坂安显近藤邦夫
Owner SHOWA DENKO KK
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