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Copolymer donor material for optically active layer of polymer solar cell (PSC) and preparation method of copolymer donor material

A technology of solar cells and photoactive layers, which is applied in the fields of electrical solid-state devices, semiconductor/solid-state device manufacturing, circuits, etc., can solve problems such as low conjugation, low band gap, and poor solubility, and achieve enhanced solubility and processing Performance, increased conjugation degree, effect of high conjugation degree

Inactive Publication Date: 2015-01-28
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the donor material also has a low band gap and strong intramolecular charge transfer (ICT) ability, but it also has disadvantages such as harsh synthesis conditions, low degree of conjugation, and poor solubility.

Method used

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  • Copolymer donor material for optically active layer of polymer solar cell (PSC) and preparation method of copolymer donor material
  • Copolymer donor material for optically active layer of polymer solar cell (PSC) and preparation method of copolymer donor material
  • Copolymer donor material for optically active layer of polymer solar cell (PSC) and preparation method of copolymer donor material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Synthesis of 2-hydroxy-2-(4-methylphenyl)acetic acid

[0031] Add 4-methylbenzaldehyde (0.1 mol), chloroform (0.2 mol) and benzyltriethylammonium chloride (0.2 mol) with a molar ratio of 1: 2: 2 in a 250 mL three-necked flask, and then slowly 5 mL of 50% sodium hydroxide aqueous solution was added dropwise, and the temperature was controlled at 52 ℃ to react for 7 h. After the reaction, the reaction mixture was poured into 50 mL deionized water to dilute, and extracted twice with ether. The aqueous layer was acidified with sulfuric acid to pH 1, and then extracted twice with ether. After the ether was evaporated from the extract, it was vacuum dried to obtain 2-hydroxy-2-(4-methylphenyl)acetic acid with a yield of 91%.

[0032] 2) Synthesis of 3,7-bis-(4-methylphenyl)benzo[1,2-b:4,5-b’]difuran-2,6-dione

[0033] Add hydroquinone (20 mmol), p-methylmandelic acid (100 mmol), and sulfuric acid (40 mmol) in a molar ratio of 1:5:2 to a 250 mL three-necked flask. Add 20 mL of ...

Embodiment 2

[0048] 1) Synthesis of 2-hydroxy-2-(4-methylphenyl)acetic acid

[0049] Add 4-methylbenzaldehyde (0.1 mol), chloroform (0.2 mol) and benzyltriethylammonium chloride (0.3 mol) with a molar ratio of 1: 2: 3 in a 250 mL three-necked flask, and then slowly 7 mL of 50% sodium hydroxide aqueous solution was added dropwise, and the temperature was controlled at 55 ℃ to react for 9 h. After the reaction, the reaction mixture was diluted with 80 mL of deionized water, and extracted twice with ether. The aqueous layer was acidified with sulfuric acid to pH 1, and then extracted twice with ether. After the ether was evaporated from the extract, it was vacuum dried to obtain 2-hydroxy-2-(4-methylphenyl)acetic acid with a yield of 94%.

[0050] 2) Synthesis of 3,7-bis-(4-methylphenyl)benzo[1,2-b:4,5-b’]difuran-2,6-dione

[0051] Add hydroquinone (20 mmol), p-methylmandelic acid (100 mmol), and sulfuric acid (80 mmol) in a molar ratio of 1:5:4 to a 250 mL three-necked flask. Add 25 mL of acetic...

Embodiment 3

[0066] 1) Synthesis of 2-hydroxy-2-(4-methylphenyl)acetic acid

[0067] Add 4-methylbenzaldehyde (0.1 mol), chloroform (0.3 mol) and benzyltriethylammonium chloride (0.4 mol) with a molar ratio of 1:3:4 to a 250 mL three-necked flask, and then slowly 10 mL of 50% sodium hydroxide aqueous solution was added dropwise, and the temperature was controlled at 60 ℃ to react for 10 h. After the reaction, the reaction mixture was diluted with 90 mL of deionized water, and extracted twice with ether. The aqueous layer was acidified with sulfuric acid to pH 2, and then extracted twice with ether. After the ether was evaporated from the extract, it was vacuum dried to obtain 2-hydroxy-2-(4-methylphenyl)acetic acid with a yield of 90%.

[0068] 2) Synthesis of 3,7-bis-(4-methylphenyl)benzo[1,2-b:4,5-b’]difuran-2,6-dione

[0069] Add hydroquinone (20 mmol), p-methylmandelic acid (200 mmol), and sulfuric acid (80 mmol) in a molar ratio of 1:10:4 to a 250 mL three-necked flask. Add 30 mL of aceti...

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Abstract

The invention relates to a copolymer donor material for an optically active layer of a polymer solar cell (PSC) and a preparation method of the copolymer donor material. The structural formula of the compound is shown in the specification, wherein n ranges from 3 to 10. According to the method, synthesis steps are simple and mild, raw materials for synthesis are cheap, and preparation cost is low. The obtained copolymer is good in thermal stability (namely half decomposing temperature is higher than 300 DEG C), is good in photoelectric property and dissolving property, and is suitable for being used as the active layer material of the PSC; as the copolymer donor material has a low band gap (1.85eV), electronic transition energy is lowered while the light absorption scope of the material is enlarged to 200-700nm; as the material has a large rigid conjugate structure, the intensity of intramolecular charge transfer (ICT) is enhanced while intermolecular pi-pi accumulation in a solid structure is increased, and thus the copolymer donor material can replace a traditional material for the optically active layer of the PSC.

Description

Technical field [0001] The invention relates to a copolymer donor material for a photoactive layer of a polymer solar cell and a preparation method thereof. Background technique [0002] With the rapid increase in the global demand for energy, solar energy, as a rich, renewable, and clean energy source, has received widespread attention. Solar cells with photoelectric conversion performance have become a research focus that has attracted worldwide attention. Today's solar cells can be divided into inorganic and organic solar cells. Although inorganic solar cells have a relatively high market share and photoelectric conversion efficiency, their own shortcomings, such as high production costs, high energy consumption, poor processing performance, and complex production processes, restrict their further development. Organic solar cells have attracted widespread attention in the scientific and industrial circles due to their advantages of light weight, low cost, and solution proces...

Claims

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Application Information

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IPC IPC(8): C08G61/12H01L51/46
CPCY02E10/549
Inventor 贺英蔡计杰何超奇王鑫楠曹雨王均安
Owner SHANGHAI UNIV
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