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Photosensitive fuel for dye-sensitized solar cell and preparation method thereof

A technology of solar cells and photosensitizing dyes, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of high cost and inability to meet large-scale promotion and application, and achieve the effect of improving the absorption rate

Inactive Publication Date: 2013-06-12
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Silicon-based solar cells are the most developed among solar cells, but due to their high cost, they are far from meeting the requirements of large-scale application.

Method used

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  • Photosensitive fuel for dye-sensitized solar cell and preparation method thereof
  • Photosensitive fuel for dye-sensitized solar cell and preparation method thereof
  • Photosensitive fuel for dye-sensitized solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In this embodiment, a method for preparing a novel photosensitive dye for dye-sensitized solar cells comprises the following steps:

[0033] 1) Preparation of 5-(4-aminophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin:

[0034] Take 1.5g of 5-(4-nitrophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin and 1g of stannous chloride dihydrate in a three-necked flask, and then add 15mL Concentrated hydrochloric acid with a mass fraction of 30% fully dissolves 5-(4-nitrophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin and stannous chloride dihydrate, under nitrogen protection , heated up to 65°C and reacted for 5 hours. After the reaction, cooled to room temperature, then adjusted the pH value to 7 with concentrated ammonia water with a mass fraction of 20%, then extracted with dichloromethane, then spin-dried the dichloromethane, and finally used The product was separated by column chromatography on a neutral alumina column to obtain 5-(4-aminophenyl)-10,15,20-tris(4-hydroxypheny...

Embodiment 2

[0055] In this embodiment, a method for preparing a novel photosensitive dye for dye-sensitized solar cells comprises the following steps:

[0056] 1) Preparation of 5-(4-aminophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin:

[0057] Take 1.5g of 5-(4-nitrophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin and 1.5g of stannous chloride dihydrate in a three-necked flask, and then add 20mL of concentrated hydrochloric acid with a mass fraction of 35% was used to fully dissolve 5-(4-nitrophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin and stannous chloride dihydrate. After the reaction, cool to room temperature, adjust the pH value to 8.5 with concentrated ammonia water, then extract with dichloromethane, spin the dichloromethane to dryness, and finally use a neutral alumina column to The product was separated by column chromatography to obtain 5-(4-aminophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin;

[0058] 2) Preparation of 5-(4-aminophenyl)-10,15,20-tris(4-hydroxyphenyl)zinc...

Embodiment 3

[0063] In this embodiment, a method for preparing a novel photosensitive dye for dye-sensitized solar cells comprises the following steps:

[0064] 1) Preparation of 5-(4-aminophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin:

[0065] Take 2g of 5-(4-nitrophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin and 2g of stannous chloride dihydrate in a three-necked flask, and then add 50mL mass Concentrated hydrochloric acid with a fraction of 37% fully dissolves 5-(4-nitrophenyl)-10,15,20-tri(4-hydroxyphenyl)porphyrin and stannous chloride dihydrate, under nitrogen protection, Raise the temperature to 75°C and react for 1 hour. After the reaction, cool to room temperature, then adjust the pH value to 10 with concentrated ammonia water, then extract with dichloromethane, spin the dichloromethane to dryness, and finally test the product with a neutral alumina column. 5-(4-aminophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin was obtained by column chromatography separation;

[0066] 2)...

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Abstract

The invention belongs to the technical field of solar cell materials, and particularly relates to a sensitizer for a dye-sensitized solar cell and a preparation method thereof. The preparation method of the photosensitizer provided by the invention comprises the following steps of: taking 5-(4-nitrophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin as an initiator; under nitrogen conditions, dissolving the initiator in concentrated hydrochloric acid, and reducing the initiator into 5-(4-aminophenyl)-10,15,20-tris(4-hydroxyphenyl)porphyrin by using stannous chloride; then, dissolving the reduced porphyrin and zinc acetate in an inert organic solvent for coordination; finally, dissolving the generated zinc protoporphyrin and 4-carboxybenzaldehyde in a dichloromethane solvent, and heating and refluxing; and after the reaction is finished, adding petroleum ether or absolute methanol for precipitating products, and recrystallizing to obtain a corresponding product N-(5-p-phenyl)-10,15,20-tris-p-hydroxyphenyl zinc protoporphyrin-p-carboxyl benzimide. The product provided by the invention has the advantages of high molar extinction coefficient, low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of solar cell materials, and in particular relates to a sensitizer for dye-sensitized solar cells and a preparation method thereof. Background technique [0002] Solar cells convert solar energy directly into electrical energy, which is a clean energy source and one of the best ways to solve the energy crisis and environmental pollution. In 1954, Bell Laboratories reported a solar cell with a photoelectric conversion efficiency of 6%, marking a practical The beginning of chemical solar research. Silicon-based solar cells are the most developed among solar cells, but due to their high cost, they are far from meeting the requirements of large-scale popularization and application. Dye-sensitized TiO 2 Solar cells (Dye–sensitized solar cells, DSSCs) are a new type of high-efficiency solar cells proposed and developed by Swiss scientist Professor Gratzel in 1991, which is a new milestone in the development of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B47/00
Inventor 张学俊孟欢张蓉
Owner ZHONGBEI UNIV
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