Dye-sensitized photoelectric conversion device

A photoelectric conversion and device technology, applied in the fields of photovoltaic power generation, electrical components, semiconductor devices, etc., can solve the problems of lack of practicality, low durability, and high cost of pigments

Inactive Publication Date: 2006-04-19
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to obtain devices with high conversion efficiency, ruthenium-based complexes are used as sensitizing dyes, so the cost of the dye itself is high, and supply is also a problem.
In addition, although experiments using organic dyes as sensitizing dyes have been conducted before, the current situation is that the conversion efficiency, stability, and durability are low and cannot be used practically. Therefore, it is desired to improve the conversion efficiency (refer to WO2002011213 publication)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0132] 1 part of the following compound (532) and 0.45 parts of methyl cyanoacetate were dissolved in 10 parts of ethanol, and 0.05 parts of anhydrous piperazine was added to the solution. After performing the reflux reaction for 2 hours, the solid obtained by cooling was filtered, washed, and dried. The solid was refluxed in 20 parts ethanol in the presence of 1 part potassium hydroxide for 2 hours. After adding 50 parts of water to the reaction solution, it was neutralized with hydrochloric acid, and the precipitated orange crystals were filtered, washed with water, and recrystallized with ethanol to obtain 0.71 parts of Compound (197) as orange-brown crystals.

[0133] λmax (EtOH: 435nm)

[0134] 1H-NMR (PPM: d6-DMSO): 2.97 (s.CH 3 .6H), 6.77(d.arom.2H), 7.42(d.thio.1H), 7.56(d.arom.2H), 7.66(d.thio.1H), 8.08(s.-CH=.1H)

[0135]

Embodiment 2

[0137] Except that 1 part of compound (532) was replaced with 1.6 parts of the following compound (533), the same treatment as in Example 1 was carried out to obtain 0.98 parts of compound (205) as orange-brown crystals.

[0138] λmax (EtOH: 431)

[0139] 1H-NMR (PPM: d6-DMSO): 6.98 (d.arom.2H), 7.12 (m.arom.6H), 7.37 (m.arom.4H), 7.64 (d.thio.1H), 7.69 (d .arom.2H), 8.00(d.thio.1H), 8.47(s.-CH=.1H)

[0140]

Embodiment 3

[0142]Except that 1 part of compound (532) was replaced with 1.7 parts of the following compound (534), the same treatment as in Example 1 was carried out to obtain 1.23 parts of compound (523) as brown crystals.

[0143] λmax (EtOH: 457nm)

[0144] 1H-NMR (PPM:d6-DMSO): 6.98(d.arom.2H), 7.01-7.20(m.(arom.6H+-CH=.1H)), 7.27-7.44(m.(arom.4H+-CH =.1H)), 7.64(d.thio.1H), 7.68(d.arom.2H), 7.99(d.thio.1H), 8.47(s.-CH=.1H)

[0145]

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Abstract

A photoelectric conversion device sensitized with an organic dye; and a solar cell including the same. In accordance with a demand to now for the development of a photoelectric conversion device including an organic-dye-sensitized semiconductor, which photoelectric conversion device realizes high conversion efficiency and high practicability and is produced with an inexpensive dye, there is provided a photoelectric conversion device of high conversion efficiency produced by sensitizing fine semiconductor particles with the use of a methine dye of specified skeleton.

Description

technical field [0001] The present invention relates to a photoelectric conversion device and a solar cell sensitized by an organic dye. Specifically, it relates to a photoelectric conversion device characterized by using oxide semiconductor fine particles sensitized by a dye having a specific skeleton, and a solar cell using the device. Background technique [0002] Solar cells, which use sunlight instead of fossil fuels such as oil and coal, have attracted much attention. Currently, research and development are being actively conducted on improving the efficiency of silicon solar cells using crystalline or amorphous silicon, compound semiconductor solar cells using gallium, arsenic, and the like. However, the energy and high cost required for these manufactures make it difficult to use them widely. In addition, a photoelectric conversion device using semiconductor microparticles sensitized with a dye, or a solar cell using the same is known, and materials and manufacturin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M14/00C09B23/10H01L31/04
CPCY02E10/542
Inventor 池田征明紫垣晃一郎井上照久
Owner NIPPON KAYAKU CO LTD
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