Broad-band gap polymer donor material based on benzodithiazole electron-deficient unit and preparation method and application thereof

A benzobithiazole and wide-bandgap technology, which is applied in the field of wide-bandgap polymer donor materials and its preparation, can solve the problems of low carrier mobility, low absorption strength, and poor crystallinity, and achieve reduced steric hindrance, Improves absorption and improves crystallinity
CN113248693AActive Publication Date: 2021-08-13SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN UNIV
Publication Date
2021-08-13

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Abstract

The invention discloses a broad-band gap polymer donor material based on a benzodithiazole electron-deficient unit and a preparation method and application thereof, and belongs to the technical field of organic optoelectronics. Benzo [1, 2-d: 4, 5-d'] dithiazole perpendicular to a polymer main chain is used as an acceptor unit and is copolymerized with a series of donor units, and a batch of high-performance wide-band gap polymer donor materials are obtained; according to the present invention, with the application of the polymer organic solar cell, the open-circuit voltage of 0.85 V, the short-circuit current density of 25.86 mA cm<-2>, the fill factor of 67.4% and the photoelectric conversion efficiency of 14.86% can be obtained without deep optimization. The broad-band gap polymer donor material has the characteristics of good crystallinity and high absorption and migration rate, and has practical application value in organic solar cells.
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Description

technical field

[0001] The invention relates to the field of organic photoelectric technology, in particular to a wide bandgap polymer donor material based on a benzobithiazole electron-deficient unit and its preparation method and application. Background technique

[0002] The depletion of fossil energy and the environmental pollution caused by its use make the sustainable development of human beings face great challenges. The development and utilization of renewable energy has become an urgent problem to be solved. Therefore, people pay more and more attention to the development and utilization of new energy. Solar energy has the characteristics of being widely distributed, inexhaustible, clean and pollution-free, and has broad development prospects. In today's society with the rapid development of global electrification, using solar cells to convert solar energy into electrical energy is a very potential utilization method. Polymer solar cells are one of a new generati...

Claims

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