Title:
HETEROATOM-SUBSTITUTED BENZOTHIADIAZOLE-BASED POLYMER DONOR MATERIAL, AND PREPARATION METHOD AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/157427
Kind Code:
A1
Abstract:
Provided in the present invention are a heteroatom-substituted benzothiadiazole-based polymer donor material, and a preparation method and an application thereof; the heteroatom-substituted benzothiadiazole-based polymer donor material has the structure represented by formula I; the polymer donor material of the present invention has a wide bandgap, and the bandgap widens as the content of heteroatoms in a benzothiadiazole unit increases such that the open-circuit voltage Voc of a polymer increases, thereby attaining optimized polymer photoelectric energy conversion efficiency. Substituting fluorine, chlorine, cyano, and like heteroatoms on dithiophene causes the open-circuit voltage of the polymer to increase without loss of current, thereby increasing the photoelectric energy conversion efficiency of a solar cell. Using the polymer of the present invention as a donor material makes high-performance solar cells a reality; the present invention optimizes the composition and structure of polymers by means of a method of heteroatom substitution, and optimizes the aggregation of donor and acceptor materials and the morphology of photovoltaic devices, having broad prospects in the application of polymer solar cells.
Inventors:
HE FENG (CN)
CHEN HUI (CN)
HU ZHIMING (CN)
ZHONG XIAOWEI (CN)
CHEN HUI (CN)
HU ZHIMING (CN)
ZHONG XIAOWEI (CN)
Application Number:
PCT/CN2017/078505
Publication Date:
September 07, 2018
Filing Date:
March 29, 2017
Export Citation:
Assignee:
UNIV SOUTH SCIENCE & TECHNOLOGY CHINA (CN)
International Classes:
C08G61/12; H01L51/42; H01L51/46
Foreign References:
| CN102027612A | 2011-04-20 | |||
| TW201640709A | 2016-11-16 | |||
| CN101998955A | 2011-03-30 | |||
| CA2625306A1 | 2009-09-11 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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