Quinoxaline based copolymer, preparation method and applications thereof

A quinoxaline-based and copolymer technology, which is applied in the field of organic solar cell materials, can solve the problems of low conversion efficiency of inorganic solar cells, low carrier electrode collection efficiency, and mismatched spectral response, achieving novel structures and improving dissolution performance, the effect of strong fluorescent performance
CN104513367AInactive Publication Date: 2015-04-15OCEANS KING LIGHTING SCI&TECH CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
OCEANS KING LIGHTING SCI&TECH CO LTD
Publication Date
2015-04-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of organic solar cell materials, and discloses a quinoxaline based copolymer, a preparation method and applications thereof. The structural formula of the copolymer is shown in the description, in the formula, the R represents a C1-C20 alkyl group and the n represents an integer in a range of 34 to 91. In the provided quinoxaline based copolymer, quinoxaline is an excellent electron acceptor unit and is advantageously for being applied to organic solar cells. The phenyl ring is modified by an alkyloxy chain so as to improve the solubility and film-forming ability of the copolymer. Phenanthrene is a compound with a large planar rigid structure, and thus has high thermal stability and a strong fluorescence performance. The light conversion rate of an organic solar cell device can be improved by applying the provided quinoxaline based copolymer to the solar cells of the organic solar cell device.
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Description

technical field

[0001] The invention relates to the field of organic solar cell materials, in particular to a quinoxaline-based copolymer and its preparation method and application. Background technique

[0002] The preparation of low-cost and high-efficiency solar cells using cheap materials has always been a research hotspot and difficulty in the field of photovoltaics. Due to the complex production process and high cost of silicon cells currently used on the ground, their application is limited. In order to reduce the cost of batteries and expand the application range, people have been looking for new solar cell materials for a long time. Organic semiconductor materials have attracted much attention due to the advantages of readily available raw materials, low cost, simple preparation process, good environmental stability, and good photovoltaic effect. Since 1992, N.S. Sariciftci et al. reported on SCIENCE (N.S Sariciftci, L. Smilowitz, A.J. Heeger, et al. Science, 1992...

Claims

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