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Polymer photovoltaic material, preparation method and use thereof

A technology of photovoltaic materials and polymers, applied in photovoltaic power generation, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of low open circuit voltage, limiting the development and future application of polymer solar cells, etc., to increase open circuit The effect of voltage

Active Publication Date: 2014-09-10
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the open circuit voltage of high-efficiency polymer solar cells is not very high, only about 0.8V, and the low open circuit voltage limits the development and future application of polymer solar cells

Method used

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  • Polymer photovoltaic material, preparation method and use thereof
  • Polymer photovoltaic material, preparation method and use thereof
  • Polymer photovoltaic material, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The synthesis of embodiment 1 BDTT (in the formula (III), R 1 =C 6 h 13 compound of)

[0062] The chemical reaction process is as follows (refer to Lijun Huo, Angew.Chem.Int.Ed.2011, 50, 9697-9702 for specific reaction steps and reaction conditions):

[0063]

Embodiment 2

[0064] Synthesis of embodiment 2 2BrTPD

[0065] The chemical reaction process is as follows (refer to Yingping Zou, J.Am.Chem.Soc.2010, 132, 5330–5331 for specific reaction steps and reaction conditions):

[0066]

Embodiment 3

[0067] Example 3 Synthesis of Polymer P1

[0068] The chemical reaction process is as follows, and the specific reaction steps and reaction conditions are as follows:

[0069] In a 50mL three-neck flask, add 162.7mg (0.18mmol) of compound 6 and 76.5mg (0.18mmol) of compound 9, then add 16mL of ultra-dry toluene and 4mL of ultra-dry N,N-dimethylformamide, and pass argon for 20 minutes Afterwards, 15 mg of tetrakis(triphenylphosphine)palladium was quickly added, pumped and inflated three times, and then the temperature was slowly raised to 110° C., and reacted in the dark under the protection of argon for 24 hours. After the reaction is completed and the reaction system is naturally cooled to room temperature, the reaction solution is dropped into 200mL of methanol for precipitation, and the precipitate is filtered out and transferred to a Soxhlet extractor, followed by methanol, acetone, n-hexane and chloroform. Extraction, concentration of the final chloroform extract, and dr...

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Abstract

The invention discloses a polymer photovoltaic material, a preparation method and use thereof. The molecule of the polymer material takes two-dimensional conjugate dibenzothiophene or naphtho-bithiophene as a donor, and takes thiophene and pyrrole diketone and derivatives thereof as receptors, and the polymer material has a structure shown in a formula (I) or a formula (II). The polymer material is simple in preparation and easy to purify, and has good solubleness in common organic solvents (for example, dichloromethane, trichloromethane, tetrahydrofuran, chlorobenzene or o-dichlorobenzene and the like). The film with high quality can be prepared by using a liquid method. The macromolecule is applied to a donor material of a solar battery, the energy conversion efficiency exceeds 7.5%, and the open-circuit voltage exceeds 1V.

Description

technical field [0001] The invention relates to a class of photovoltaic materials and a preparation method thereof, in particular to a class of solution-processable polymer photovoltaic materials with high open-circuit voltage, a preparation method and application thereof. Background technique [0002] In 1986, Dr. Deng Qingyun of Kodak Company used copper phthalocyanine as the donor (D) and perylene as the acceptor (A) to prepare an organic photovoltaic device with a D / A heterojunction double-layer structure (C.W.Tang, Appl.Phys. Lett., 1986, 48; 183-185.), the energy conversion efficiency is close to 1% under simulated sunlight. In 1995, Yu Gang of Heiger Research Group invented a solution-processable conjugated polymer / soluble C60 derivative blend type "bulk heterojunction" (bulk heterojunction) polymer solar cell (G.Yu, J.Gao , J.C. Hummelen, F. Wudl, A.J. Heeger, Science, 1995, 270:1789-1791). The bulk heterojunction solar cell simplifies the preparation process, impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01L51/46
CPCY02E10/549Y02P70/50
Inventor 魏志祥吕琨夏本正
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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