Organic photoelectric conversion material, preparation method and applications thereof

Abstract

The invention provides an organic photoelectric conversion material, which has a ternary structure formed by using an indacenodithiophene derivative, benzothiadiazole and rhodanine as a base unit, wherein the structural formula is defined in the specification, R is a group selected from the following materials defined in the specification, and R1, R2, R3 and R4 are respectively and independently selected from hydrogen, fluorine, C1-C12 alkyl and alkoxy. According to the present invention, the material has good amorphous property and good solubility, and can be processed by solutions; by increasing the pi-pi conjugation length of the donor unit, the pi-electrons can be easily distributed along the whole polymer skeleton, have strong absorption in the visible and near-infrared regions, and has good energy level matching with commonly used donor polymers; and the material has excellent carrier transmission performance, and can be used in organic field effect transistors, organic solar cells and organic semiconductor devices.

Description

Technical field [0001] The invention belongs to the technical field of photoelectric materials, and specifically relates to an organic photoelectric conversion material, a preparation method and application thereof. Background technique [0002] With the rapid development of the world economy, energy issues have gradually become the main bottleneck for the sustainable development of all countries. Therefore, the effective use of renewable energy has become an urgent problem to be solved. Solar energy is an inexhaustible and inexhaustible energy source. Therefore, converting solar energy into electricity and heat to serve humanity has always been the goal pursued by scientists. Solar cells can be converted into electrical energy for storage and use. Therefore, many researchers are committed to the research of solar cells and have made a lot of efforts for their development and performance improvement. [0003] According to the main functional materials, solar cells can be divided ...

AI Technical Summary

Problems solved by technology

At present, inorganic photovoltaic devices represented by monocrystalline silicon and polycrystalline silicon have formed large-scale industrial applications, but due to the high cost of device preparation, it is more difficult to further expand the market

[0004] Due to the polydispersity of the polymer itself, the repeatability of the device is poor and the purity is difficult to control in polymer solar cells

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