High-Efficiency Nonfullerene Polymer Solar Cells with Medium Bandgap Polymer Donor and Narrow Bandgap Organic Semiconductor Acceptor.

Gao, Liang; Zhang, Zhi-Guo; Bin, Haijun; Xue, Lingwei; Yang, Yankang; Wang, Cheng; Liu, Feng; Russell, Thomas P et al. · Adv Mater · 2016

basic_science · Level V

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Abstract

A nonfullerene polymer solar cell with a high efficiency of 9.26% is realized by using benzodithiophene-alt-fluorobenzotriazole copolymer J51 as a medium-bandgap polymer donor and the low-bandgap organic semiconductor ITIC with high extinction coefficients as the acceptor.