Dye-sensitized photoelectric conversion device

A photoelectric and component technology, applied in the field of pigment-sensitized photoelectric conversion elements, can solve the problems of low durability, high pigment cost, and has not yet reached practical application.

Inactive Publication Date: 2008-06-11
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 a device with high conversion efficiency, a ruthenium-based complex is used as a sensitizing dye, and the cost of the dye itself is high, and there are also problems in its supply.
In addition, attempts have also been made to use organic dyes as sensitizing dyes, but the conversion efficiency, stability, durability, etc. are low, and there is a status quo that has not yet reached practical use. Further improvement in conversion efficiency is expected (see Patent Document 2)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0181] 1 part of methyl cyanoacetate and 2 parts of the following compound (318) were dissolved in 20 parts of ethanol. 0.01 part of piperidine was added to this solution, and it heated and refluxed for 2 hours. After the reaction, the solution was cooled, and the precipitated crystals were separated and purified by column chromatography, and recrystallized from ethanol to obtain 2.1 parts of orange crystals. The orange crystals were refluxed in 20 parts of ethanol in the presence of 1 part of potassium hydroxide for 2 hours. Add 50 parts of water to the reaction solution, neutralize with hydrochloric acid, filter the precipitated orange crystals, wash with water, and recrystallize with ethanol to obtain 1.2 parts of orange-brown crystals of compound number (32a).

[0182]

[0183] The maximum absorption wavelength of this compound and the measured value in a nuclear magnetic resonance apparatus are shown below.

[0184] Maximum absorption wavelength: λmax=448nm (water: a...

Embodiment 2

[0188] Except changing 2 parts of the above-mentioned compound (318) into 2 parts of the following compound (319), the same treatment as in Example 1 was carried out to obtain 1.4 parts of orange-brown crystals of compound number (278).

[0189]

[0190] The maximum absorption wavelength of this compound and the measured value in a nuclear magnetic resonance apparatus are shown below.

[0191] Maximum absorption wavelength: λmax=395nm (water: acetonitrile=7:3)

[0192] NMR measurements:

[0193] 1H-NMR (PPM:d6-DMSO): 1.34(t.3H), 4.50(m.2H), 7.28(m.2H), 7.52(m.1H), 7.69(t.2H), 7.84(m. 2H), 8.14(d.1H), 8.31(d.1H), 8.62(d.1H)

Embodiment 3 to 9

[0195] The methine pigment of the compound number shown in Table 7 was dissolved in ethanol (EtOH), making it 3.2×10 -4 M. Immerse the porous substrate (semiconductor thin film electrode formed by sintering porous titanium oxide on a transparent conductive glass electrode at 450°C for 30 minutes) in the solution for 12 hours at room temperature (20°C) to load each pigment, and then add the solvent (Ethanol) was washed and dried to obtain a photoelectric conversion element of the present invention including a dye-sensitized semiconductor thin film. For Example 8 and Example 9, two kinds of dyes were used (the methine-based dye of the present invention and the following formula (320) as the photosensitized metal complex dye described in Non-Patent Document 2 were used in combination. Or as the compound of the formula (321) of the light-sensitizing organic pigment described in patent document 2) deployment is made into 1.6 * 10 -4 The EtOH solution of M was used to support two ...

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Abstract

Disclosed is a photoelectric conversion device wherein a thin film of oxide semiconductor particles formed on a substrate is loaded and sensitized with a methine dye represented by the following formula (1). (1) (In the formula, n represents an integer of 0-7; X and Y respectively represent a hydrogen atom, an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbonresidue or the like, and X and Y may combine together to form an optionally substituted ring; A1, A2 and A3 independently represent an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue or the like, and when n is not 0, two or more of A1 and / or A2 and / or A3 may combine together to form an optionally substituted ring; and the benzene ring a may have ahalogen atom, an amide group, a hydroxyl group, a cyano group or the like as a substituent.) This photoelectric conversion device can be produced at low cost while having high conversion efficiency.

Description

technical field [0001] The present invention relates to a photoelectric conversion element and a solar cell sensitized by an organic pigment, in particular, to a photoelectric conversion element and a solar cell using the photoelectric conversion element, and the photoelectric conversion element is characterized in that it is made of Oxide semiconductor fine particles sensitized by a methine dye having a specific skeleton. Background technique [0002] Solar cells that utilize sunlight are attracting attention as energy sources that can replace fossil fuels such as petroleum and coal. At present, development and research on improving the efficiency of silicon solar cells using crystalline or amorphous silicon (amorphous silicon), compound semiconductor solar cells using gallium, arsenic, etc., etc., are actively being carried out. However, since the energy and cost required for their manufacture are high, there is a problem that it is difficult to use them widely. In addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M14/00H01L31/04C09B23/00
CPCY02E10/542
Inventor 紫垣晃一郎金子昌严前之园晃星尚志井上照久
Owner NIPPON KAYAKU CO LTD
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