A kind of d-a type copolymer donor material for photoactive layer of polymer solar cell device

A solar cell and photoactive layer technology, applied in filter regeneration, combustible gas purification, chemical instruments and methods, etc., can solve the problems of low conjugation degree, low band gap, harsh synthesis conditions, etc., and achieve high conjugation degree , Improve the degree of conjugation, enhance the solubility and processing performance

Inactive Publication Date: 2018-07-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
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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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  • A kind of d-a type copolymer donor material for photoactive layer of polymer solar cell device
  • A kind of d-a type copolymer donor material for photoactive layer of polymer solar cell device
  • A kind of d-a type copolymer donor material for photoactive layer of polymer solar cell device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Bis(2-trimethylstannyl bithiophene)-p-di-N-dialkoxyphenyl bisthienopyrrole monomer

[0023]

[0024] Add bis(bithiophene)-p-di-N-dialkoxyphenylbisthienopyrrole (2.0mmol), chloroform (60mL) and acetic acid (12mL) in a 250mL round bottom flask, add N-bromobutyl Diimide (NBS, 2.1 mmol), and the reaction mixture was stirred at room temperature for 3 h. Dichloromethane (100 mL) was then added to the reaction mixture, and the organic layer was dried over anhydrous magnesium sulfate after washing with water. The solvent was removed under reduced pressure, and the obtained light brown solid was the target product with a yield of 95%.

[0025] (2) Bis(2-trimethylstannyl bithiophene)-p-di-N-dialkoxyphenyl bisthienopyrrole

[0026]

[0027] Dissolve bibromobithiophene-p-di-N-dialkoxyphenylbisthienopyrrole (1.22mmol) in tetrahydrofuran (150mL), cool the reaction system to -78°C, add n-BuLi (2.68 mmol), stirred for 1h, warmed up to room temperature and then stirred for ...

Embodiment 2

[0042] (1) Bis(2-trimethylstannyl bithiophene)-p-di-N-dialkoxyphenyl bisthienopyrrole monomer

[0043]

[0044] In a 250mL round bottom flask, add bis(bithiophene)-p-di-N-dialkoxyphenylbisthienopyrrole (2.0mmol), chloroform (60mL) and acetic acid (16mL), add N-bromobutyl Diimide (NBS, 2.2 mmol), the reaction mixture was stirred at room temperature for 0.5 h. Dichloromethane (180 mL) was then added to the reaction mixture, and the organic layer was dried over anhydrous magnesium sulfate after washing with water. The solvent was removed under reduced pressure to obtain a solid which was the target product with a yield of 91%.

[0045] (2) Bis(2-trimethylstannyl bithiophene)-p-di-N-dialkoxyphenyl bisthienopyrrole

[0046]

[0047] Dissolve bibromobithiophene-p-di-N-dialkoxyphenylbisthienopyrrole (1.22mmol) in tetrahydrofuran (100mL), cool the reaction system to -78°C, and add n-BuLi (2.65 mmol) of n-hexane solution, stirred for 0.5h, slowly warmed up to room temperature ...

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Abstract

The invention relates to a long wavelength absorption copolymer material for an optical activity layer of a polymer solar cell. The structural formula of the compound is shown in the description, wherein R1 is C4-C12 alkyl group, R2 is C2-C8 alkyl group, R3 is C4-C10 alkyl group, and m and n are equal to 8-50. The synthesis steps of a method are simple and mild, the preparation cost is low, the band gap of the copolymer is relatively low, so that the light absorption range of the material is expanded while the electronic transition energy is reduced; the material is larger in rigid conjugated structure and coplanarity, the pi-pi stacking among molecules in a solid-state structure is improved while the charge transfer intensity in the molecule is strengthened, and the long wavelength absorption copolymer material is a material used for the optical activity layer of the polymer solar cell and has a broad prospect.

Description

technical field [0001] The invention relates to a D-A type copolymer donor material for a photoactive layer of a polymer solar cell device and a preparation method thereof. Background technique [0002] With the continuous increase of human demand for energy, energy issues have become one of the important issues facing society today. Due to the non-renewability of traditional fossil fuels and the large amount of environmental pollution caused by the use of fossil fuels, the development of a new type of renewable energy has become the focus and focus of research. People have been looking for renewable and clean energy to replace non-renewable energy such as fossils. Solar energy accounts for more than 99% of the total energy of the earth, and it is generally considered to be inexhaustible, inexhaustible, and non-polluting, so it has become one of the research objects that scientists from all over the world are competing to develop and utilize. Solar cells based on the photo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12C10G25/00B01J20/26B01J20/34
CPCB01J20/265B01J20/3425B01J20/3458C08G61/123C08G61/124C08G61/126C08G2261/124C08G2261/1412C08G2261/19C08G2261/228C08G2261/3223C08G2261/3241C08G2261/3243C08G2261/3246C08G2261/414C08G2261/51C10G25/003
Inventor 朱丽君霍添夏道宏周玉路项玉芝
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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