Asymmetric-Indenothiophene-Based Copolymers for Bulk Heterojunction Solar Cells with 9.14% Efficiency.

Wang, Meng; Cai, Dongdong; Yin, Zhigang; Chen, Shan-Ci; Du, Cheng-Feng; Zheng, Qingdong · Adv Mater · 2016

basic_science · Level V

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Abstract

The first two asymmetric-indenothiophene-based donor-acceptor copolymers (PITBT and PITFBT) are prepared through Stille coupling reactions between distannyl indenothiophene and brominated benzothiadiazole derivatives. The best performing solar cell fabricated from PITFBT exhibits a power conversion efficiency of 9.14% which demonstrates a great potential of the asymmetric indenothiophene for high-performance copolymers.