Hyperbranched polymer as an acceptor for polymer solar cells

Jicheng Zhang; Sufei Xie; Xuejuan Zhang; Zhen Lu; Hongmei Xiao; Cuihong Li; Guangwu Li; Xinjun Xu; Xuebo Chen; Zhishan Bo

doi:10.1039/C6CC07335B

Hyperbranched polymer as an acceptor for polymer solar cells†

Jicheng Zhang,^a Sufei Xie,^a Xuejuan Zhang,^a Zhen Lu,^b Hongmei Xiao,^a Cuihong Li,

^a Guangwu Li,^a Xinjun Xu,*^a Xuebo Chen^a and Zhishan Bo*^a

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* Corresponding authors

^a Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China
E-mail: xuxj@bnu.edu.cn, zsbo@bnu.edu.cn

^b College of Chemistry and Environmental Engineering, ShanXi DaTong University, Datong 037009, China

Abstract

For the first time, a hyperbranched polymer acceptor, HP-PDI, was designed, synthesized and applied in polymer solar cells (PSCs). Devices based on HP-PDI showed a power conversion efficiency of 2.15%, which is 14 times higher than that of devices based on the small molecular acceptor SM-PDI. The hyperbranched structure can effectively suppress the aggregation of PDI molecules preventing them from forming large domains. Our preliminary results have demonstrated that high efficiency PSCs could be achieved by using a hyperbranched polymer acceptor.

Chemical Communications

Hyperbranched polymer as an acceptor for polymer solar cells†

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