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Chlorine atom-modified benzobisthiophene derivative two-dimensional donor material for organic solar cells and preparation method of chlorine atom-modified benzobisthiophene derivative two-dimensional donor material

A benzobisthiophene and solar cell technology is applied in the field of benzobisthiophene derivative organic solar cell two-dimensional donor materials and their preparation, and can solve the problems of long energy repayment time, complicated preparation procedures, easy to produce pollution and the like , to achieve the effect of good thermal stability, good complementary performance, good optical absorption complementary effect

Inactive Publication Date: 2018-11-30
WUHAN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

However, traditional silicon-based solar cells are not only expensive, have a long energy repayment time, complex preparation procedures, and are prone to pollution during the production process.

Method used

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  • Chlorine atom-modified benzobisthiophene derivative two-dimensional donor material for organic solar cells and preparation method of chlorine atom-modified benzobisthiophene derivative two-dimensional donor material
  • Chlorine atom-modified benzobisthiophene derivative two-dimensional donor material for organic solar cells and preparation method of chlorine atom-modified benzobisthiophene derivative two-dimensional donor material
  • Chlorine atom-modified benzobisthiophene derivative two-dimensional donor material for organic solar cells and preparation method of chlorine atom-modified benzobisthiophene derivative two-dimensional donor material

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Experimental program
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Embodiment 1

[0031] Step 1: Inject 3-chlorothiophene (compound 1, 10g, 84.33mmol) into a 250mL single-necked flask containing 50mL of tetrahydrofuran (dehydrated in advance), seal and exhaust air and fill with N 2 protection. Under a nitrogen atmosphere and 0°C, add lithium diisopropylamide (compound 2, 46.38mL (2M), 92.76mmol) dropwise to the mixture, stir for 30 min, and then add bromoisooctane (compound 3. 17.91 g, 92.76 mmol), stirred at room temperature for 2 h, and then quenched with ice water. After liquid separation, the organic layer was extracted with petroleum ether, water was removed with anhydrous magnesium sulfate, and suction filtered. The filtrate was concentrated and distilled to obtain 3-chloro-2-isooctylthiophene (compound 4, 10 g, 57.24 mmol) as a colorless liquid. The calculation shows that the yield of compound 4 is 68%. The reactions involved in this process are as follows:

[0032]

[0033] Step 2: Pour 3-chloro-2-isooctylthiophene (compound 4, 2g, 11.45mmol) into a...

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Abstract

The invention relates to the technical field of organic solar cells, and particularly discloses a chlorine atom-modified benzobisthiophene derivative two-dimensional donor material for organic solar cells and a preparation method of the material. By introducing chlorine atoms on conjugate side chains of donor units, the molecular energy level of the polymer material is effectively adjusted so as to increase the open circuit voltage Voc of a device, and the donor material and an acceptor material have a good optical absorption complementary effect so as to significantly improve the performanceand photoelectric conversion efficiency of the solar cell device. The two-dimensional donor material of the organic solar cells has a structural formula as follows.

Description

Technical field [0001] The invention relates to the technical field of organic optoelectronic materials, in particular to a two-dimensional donor material for organic solar cells of benzobisthiophene derivatives modified by chlorine atoms and a preparation method thereof. Background technique [0002] With the gradual depletion of oil and other energy sources, the development and application of renewable energy such as solar energy has gradually become the focus of social attention. The use of solar energy is mainly to develop solar cells. However, traditional silicon-based solar cells are not only expensive, longer energy repayment time, complicated preparation procedures, but also prone to pollution during the production process. In comparison, organic solar cells and perovskite solar cells have the incomparable advantages of silicon-based solar cells, such as light weight, low price, easy processing, and large-area devices, and have received increasing attention from related r...

Claims

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Application Information

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IPC IPC(8): C08G61/12
CPCC08G61/126C08G2261/124C08G2261/1412C08G2261/146C08G2261/149C08G2261/3243C08G2261/414C08G2261/91
Inventor 刘治田东俊高翔
Owner WUHAN INSTITUTE OF TECHNOLOGY
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