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Compound used as dye sensitizing agent of solar cell and preparation method thereof

A dye sensitizer and solar cell technology, applied in the field of sensitizer materials for solar cells, can solve the problems of high price, impossibility of large-scale industrial production, complicated preparation process, etc., and achieve convenient purification, good chemical stability, Simple operation effect

Inactive Publication Date: 2012-05-02
广东信泰科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is now recognized that the best Cis-Ru(H 2 -debpy) 2 (NCS) 2 The preparation process is more complicated, so the price is more expensive
Although ruthenium-based polypyridine complex dyes are currently the most studied dyes, since metal ruthenium is a rare metal, the source of raw materials is limited, and it is impossible to produce large-scale industrial production. Therefore, finding new dye sensitizers is a problem that needs to be solved.

Method used

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  • Compound used as dye sensitizing agent of solar cell and preparation method thereof
  • Compound used as dye sensitizing agent of solar cell and preparation method thereof
  • Compound used as dye sensitizing agent of solar cell and preparation method thereof

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preparation example Construction

[0030] The embodiment of the present invention also provides a preparation method of any one of the above compounds used as a dye sensitizer for solar cells, the method comprising the following steps:

[0031] The first step: synthesize 2 according to the following formula one, 2': 5', 2'-tetrathiophene-5-carbaldehyde, wherein M 三联噻吩 : M DMF : M POCl3 The molar weight ratio is 1: 1.5: 1.5, and formula one is as follows:

[0032] formula one;

[0033] The first step above specifically includes:

[0034] Dichloromethane: N, N dimethylformamide (DMF): phosphorus oxychloride (POCl 3 ) in a volume ratio of 25:6:7 to get dichloromethane, DMF and POCl 3, add dichloromethane into container 1 and perform magnetic stirring, put container 1 into ice-water mixture, when the temperature of dichloromethane drops to -20~10℃, then add N,N dimethylformamide to form Mixed solution, when the temperature of the mixed solution is -20~10°C, add phosphorus oxychloride dropwise, and keep the ...

Embodiment 1

[0047] This embodiment provides a compound used as a dye sensitizer for solar cells, the compound is meso-5,10,15,20-tetra(2,2':5',2''-trithiophene) porphyrin (TTTP), specifically related to the synthesis of 2,2':5',2'-tetrathiophene-5-carbaldehyde, as well as the synthesis of the final product TTTP and the post-treatment of the product, so as to synthesize dyes that can be used as dye-sensitized solar cells Sensitizer Compound (TTTP).

[0048] The concrete preparation method of this compound is as follows:

[0049] The first step: compound compound 2,2': 5', 2'-tetrathiophene-5-carbaldehyde is synthesized according to formula one:

[0050] formula one;

[0051] The operation steps of the first step specifically include: adding 5ml of dichloromethane into a 100ml three-necked flask, putting it into an ice-water mixture, adding 1.2ml of DMF when the temperature of the dichloromethane is about 0°C, and continuing to Magnetic stirring, when the temperature of the mixture is ...

Embodiment 2

[0060] The method steps are the same as in Example 1, and the difference from Example 1 is that the POCl of 1.2ml is added in the first step 3 , the addition of other components is the same as in Example 1. The amount of product obtained after recrystallization, purification and drying was 2.012 g, and the yield was 72.32%.

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Abstract

The invention discloses a compound used as a dye sensitizing agent of a solar cell and a preparation method thereof, belonging to a sensitizing agent material field. The compound is meso-5, 10, 15, 20-tetra(2, 2':5', 2''-terthiophene)porphyrin (TTTP). The preparation method is simple in operation and convenient in purification. The compound is mainly used as a sensitizing agent of the dye sensitizing solar cell, and is a 'D-A-D' three-unit compound composed of trithiophene and porphyrin structures. Because of the coupling reaction of the trithiophene by an electron oxidation reaction, trithiophene can be used as a coupling reaction unit and an electron donor (D); and because the porphyrin is a conjugated macrocyclic compound comprising an 18 electron system formed by connecting methylenes of four pyrrole rings, the porphyrin is used as a photoabsorption and an electron acceptor (A). The compound has good chemical stability, and can effectively raise the photoelectric conversion efficiency of the solar cell after the dye sensitizes the solar cell.

Description

technical field [0001] The invention relates to the field of sensitizer materials for solar cells, in particular to a compound used as a dye sensitizer for solar cells and a preparation method thereof. Background technique [0002] The energy crisis in today's world is becoming more and more serious. For the sustainable development of human beings, it is necessary to seek efficient, clean and renewable energy. Solar energy has attracted widespread attention due to its unique advantages. Silicon solar cells were once widely concerned and researched by people. However, due to the high production cost of silicon solar cells, the possibility of large-scale industrial production and application is relatively small. Therefore, some western countries have begun to invest a lot of manpower, material resources and financial resources. To develop new technologies that utilize solar energy to replace silicon solar cells. At present, dye-sensitized solar cells have attracted widespread...

Claims

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Application Information

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IPC IPC(8): C07D487/22C09B47/00H01G9/004H01G9/20H01L51/46
CPCY02E10/542Y02E10/549
Inventor 杨明山孙效雷戴玉华李林楷
Owner 广东信泰科技有限公司
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