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Metal oxide semiconductor electrode having porous thin film, dye-sensitized solar cell using same, and method for manufacturing same

An oxide semiconductor and solar cell technology, applied in semiconductor devices, electrolytic capacitors, final product manufacturing, etc., can solve the problems of inability to generate photoelectrons, control photoelectron recombination reactions, and reduce DSSC efficiency.

Inactive Publication Date: 2014-01-08
POSTECH ACAD IND FOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, this method cannot control the photoelectron recombination reaction that occurs on the surface of metal oxides, so a solution that can improve this problem is needed
[0013] Moreover, the dye is adsorbed by forming carboxylate on the surface of titanium dioxide, and this chemical bond can be desorbed by water molecules in the electrolyte or nucleophilic molecules generated by the thermal decomposition of the electrolyte at high temperature, thereby dissolving into the electrolyte , and the dissolved dye cannot generate photoelectrons, so this is considered to be the main reason for reducing the efficiency of DSSC

Method used

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  • Metal oxide semiconductor electrode having porous thin film, dye-sensitized solar cell using same, and method for manufacturing same
  • Metal oxide semiconductor electrode having porous thin film, dye-sensitized solar cell using same, and method for manufacturing same
  • Metal oxide semiconductor electrode having porous thin film, dye-sensitized solar cell using same, and method for manufacturing same

Examples

Experimental program
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Effect test

Embodiment 1

[0067] The titanium dioxide (dye) porous film-forming composition was coated on a transparent glass substrate coated with fluorine-doped indium tin oxide with a substrate resistance of 15Ω / □ by doctor blade film-forming method. After drying, heat treatment was performed at 500° C. for 30 minutes to form a porous film made of titanium dioxide. The thickness of the porous membrane prepared at this time was about 6 μm. Afterwards, the first electrode forming the porous membrane was soaked in acetocyanide and tert-butanol (1:1 volume ratio) as a solvent, and 0.30 mM ruthenium (4,4-dicarboxy-2,2' -dipyridine) 2 (NCS) As a dye, 0.30 mM methacryloyl-4-aminobutyric acid (methacryloyl-4-aminobutyric acid) was soaked in a solution as a co-adsorbent for 18 hours to adsorb the dye on the porous membrane. Afterwards, a solution is coated on the first electrode on which the dye and the co-adsorbent are adsorbed on the porous membrane. solution, followed by crosslinking at 80 °C for 30 mi...

Embodiment 2

[0071] In addition to dissolving 0.8M 1-butyl-3-methylimidazolium iodine and 0.03M concentration of iodine and 0.2M 4-tert-butylpyridine in the solvent of methoxypropionitrile, the remaining steps All the same as in Example 1.

Embodiment 3

[0073] Except for using a mixed solution of methyl methacrylate and 1,6-hexanediol diacrylate at a ratio of 4 as the electrolyte, and re-crosslinking the electrolyte to prepare a quasi-solid-state dye-sensitized solar cell, the rest of the steps were performed uniformly Example 2 is the same.

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Abstract

The present invention relates to a dye-sensitized solar cell and to a method for manufacturing same, and more specifically, to a novel dye-sensitized solar cell for preventing photoelectron recombination due to a triiodide, and to a method for manufacturing same. The dye-sensitized solar cell, according to the present invention, comprises a metal oxide which is produced by co-adsorption of a reactive compound, which can react with iodine, with a dye on a surface of the dye-sensitized solar cell. The dye-sensitized solar cell can achieve high efficiency by preventing the photoelectron recombination due to the triiodide while using a small amount of the dye.

Description

technical field [0001] The invention relates to a dye-sensitized solar cell and a manufacturing method thereof, in particular to a novel dye-sensitized solar cell capable of preventing photoelectron recombination caused by triiodide and a manufacturing method thereof. Background technique [0002] A solar cell device refers to a device that directly generates electricity by using a light-absorbing substance that generates electrons and holes under light irradiation. It is caused by the photovoltaic effect. In 1839, French physicist Becquerel first discovered that the The induced chemical reaction produces the photovoltaic effect of electric current, a similar phenomenon was later found in solids such as selenium. [0003] In 1991, the Grache research team in Switzerland published a report on the preparation of photoelectric conversion efficiency of 10% by chemically adsorbing ruthenium (phophyrine) dyes on anatase titanium dioxide with nanocrystalline structure, and using io...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20
CPCY02E10/542H01L31/042H01G9/2009H01G9/2013H01G9/2059Y02P70/50H10K85/344H01L31/04H01G9/2018H01G9/2027
Inventor 朴泰镐权永洙朴盛海任锺徹宋仁永
Owner POSTECH ACAD IND FOUND
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