A polythiophene derivative with superior properties for practical application in polymer solar cells.

Zhang, Maojie; Guo, Xia; Ma, Wei; Ade, Harald; Hou, Jianhui · Adv Mater · 2014

basic_science · Level V

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Abstract

A polythiophene derivative called PDCBT, which has a backbone of thiophene units and just carboxylate functional groups to modulate its properties, exhibits properties superior to those of poly(3-hexylthiophene), the classic polythiophene derivative, when used as an electron donor in polymer solar cells (PSCs). The best device, based on PDCBT/PC71BM (1:1), develops a good power conversion efficiency of 7.2%.