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Titanium dioxide paste, porous semiconductor electrode substrate, photoelectrode, and dye-sensitized photovoltaic cell

A titanium dioxide, semiconductor technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, photosensitive equipment, etc.

Active Publication Date: 2021-06-22
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, the porous semiconductor layer formed by the above-mentioned prior art still has room for improvement in terms of adhesion to the conductive substrate.

Method used

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  • Titanium dioxide paste, porous semiconductor electrode substrate, photoelectrode, and dye-sensitized photovoltaic cell
  • Titanium dioxide paste, porous semiconductor electrode substrate, photoelectrode, and dye-sensitized photovoltaic cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0167]

[0168] Titanium dioxide nanoparticles A (average particle diameter: 30nm) are added to an aqueous sol (solid content concentration: 18% to 20% by mass, pH 2.6) obtained by dispersing titanium dioxide nanoparticles D (average particle diameter: 12nm) in water and the powder of titanium dioxide nanoparticles B (average particle diameter: 40 nm) were mixed so that the mass ratio in terms of solid content was A:B:D=47:30:23. In addition, the average particle diameter of titanium dioxide nanoparticle A and B is the value calculated by the particle diameter distribution measurement obtained by the scanning electron microscope observation method. Further, ethylene glycol mono-tert-butyl ether (EGTBE) and diacetone alcohol (DAA) were added so that the concentrations in the titanium dioxide paste became EGTBE: 4.8% by mass and DAA: 1.9% by mass, respectively, to obtain a mixture. The mixture was dispersed by passing through a table-top three-roll mill 10 times to prepare a t...

Embodiment 2

[0182] In the preparation of the titanium dioxide paste of Example 1, by changing the pH of the aqueous sol containing titanium dioxide nanoparticles D from 2.6 to 2.9, the pH of the obtained titanium dioxide paste was changed from 2.9 to 3.1, in addition, the same as in Example 1 In the same manner, a titanium dioxide paste, a porous semiconductor electrode substrate, and a dye-sensitized solar cell were prepared or produced, and various measurements and evaluations were performed. The results are shown in Table 1.

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Abstract

The purpose of the present invention is to provide a titanium dioxide paste with which it is possible to form a porous semiconductor layer having excellent adhesion with an electroconductive substrate. This titanium dioxide paste contains titanium dioxide nanoparticles and water, and is characterized by having a pH that falls within the range of 2.6 to 3.5, inclusive.

Description

technical field [0001] The invention relates to a titanium dioxide paste, a porous semiconductor electrode substrate, a photoelectrode and a dye-sensitized solar cell. Background technique [0002] In recent years, solar cells have attracted attention as photoelectric conversion elements that convert light energy into electric power. Among them, dye-sensitized solar cells can be expected to be lighter in weight compared with silicon-type solar cells, etc. In addition, stable power generation can be performed in a wide range of illuminance, large-scale equipment is not required, and relatively inexpensive materials can be used for manufacturing, etc. So much attention. [0003] Here, a dye-sensitized solar cell generally has a structure in which a dye-sensitized electrode (photoelectrode), an electrolyte layer, and a counter electrode having a catalyst layer are arranged in this order. [0004] The dye-sensitized electrode of the dye-sensitized solar cell can be made by, fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047H01G9/20
CPCY02E10/542H01G9/2031C01G23/0532C01G23/0536C01G23/07C01P2004/53C01P2004/64C01P2006/22H01G9/07C01G23/047C01P2004/62C01P2006/40H01G9/2059
Inventor 清水基寻
Owner ZEON CORP