Stereomeric effects of bisPC71BM on polymer solar cell performance

Two stereomers of bisadduct analogues of [6, 6]-phenyl-C71-butyric acid methyl ester （bisPC71BM） were synthesized and their geometrical structures with cis- or trans-configuration were identified by X-ray crystallogra- phy. Although both of the bisPC71BM have similar spec- trometric and electrochemi...

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Published in:中国科学通报：英文版 2016 (2), p.132-138
Main Author: Lin-Long Deng Xiang Li Shuai Wang Wen-Peng Wu Si-Min Dai Cheng-Bo Tian Yi Zhao Su-Yuan Xie Rong-Bin Huang Lan-Sun Zheng
Format: Article
Language:English
Subjects:
3-己基噻吩
光伏性能
功率转换效率
太阳能电池
构作
电池性能
立体异构体
聚合物
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Summary:Two stereomers of bisadduct analogues of [6, 6]-phenyl-C71-butyric acid methyl ester （bisPC71BM） were synthesized and their geometrical structures with cis- or trans-configuration were identified by X-ray crystallogra- phy. Although both of the bisPC71BM have similar spec- trometric and electrochemical properties, the spatial orientation of the two addition groups on C7o has impact on crystal packing and molecular assembly of bisPC71BM isomers and, in turn, photovoltaic performance in polymer solar cell based on poly（3-hexylthiophene） （P3HT） （with power conversion efficiency of 1.72 % and 1.84 % for the solar cells involving cis- and trans-bisPC71BM, respec- tively）. Although the power conversion efficiency remains to be improved, this work exemplifies that the photovoltaic properties of fullerene-based electron acceptors areinfluenced by aggregation of the stereomeric molecules and thus extends the guidelines for rational design of efficient fullerene acceptor.
ISSN:1001-6538
1861-9541