Dithienocarbazole and isoindigo based amorphous low bandgap conjugated polymers for efficient polymer solar cells.

Deng, Yunfeng; Liu, Jian; Wang, Jiantai; Liu, Lihui; Li, Weili; Tian, Hongkun; Zhang, Xiaojie; Xie, Zhiyuan et al. · Adv Mater · 2014

basic_science · Level V

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Abstract

Three highly rigid and planar low-bandgap conjugated polymers comprising alternate isoindigo and dithienocarbazole groups are synthesized for the fabrication of high performance polymer solar cells. Power conversion efficiencies of up to 7.2% for conventional devices and 8.2% for inverted devices are demonstrated.