A medium-bandgap small molecule donor compatible with both fullerene and unfused-ring nonfullerene acceptors for efficient organic solar cells

Xianjie Chen; Xueyan Ding; Qian Zhang; Di Wang; Lingling Zhan; Xinhui Lu; Feifei Wu; Zheng Xu; Huayu Qiu; Wanzhi Chen; Chang-Zhi Li

doi:10.1039/C9TC04680A

A medium-bandgap small molecule donor compatible with both fullerene and unfused-ring nonfullerene acceptors for efficient organic solar cells†

Xianjie Chen,^ac Xueyan Ding,^c Qian Zhang,

*^c Di Wang,^b Lingling Zhan,^b Xinhui Lu,^e Feifei Wu,^a Zheng Xu,^d Huayu Qiu,

*^cd Wanzhi Chen

*^a and Chang-Zhi Li

*^b

Author affiliations

* Corresponding authors

^a Department of Chemistry, Zhejiang University, Hangzhou 310028, P. R. China
E-mail: chenwzz@zju.edu.cn

^b MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
E-mail: czli@zju.edu.cn

^c College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, P. R. China
E-mail: qzhang@hznu.edu.cn, hyqiu@hznu.edu.cn

^d Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, P. R. China

^e Department of Physics, Chinese University of Hong Kong, New Territories, Hong Kong 999077, P. R. China

Abstract

Here we designed and synthesized a new small molecule donor DRC4TB with an alkylthiothienyl-substituted benzodithiophene as the core and 3-butyl rhodanine as the terminal group, which showed an optical bandgap of 1.87 eV. DRC4TB was compatible with both a fullerene acceptor (PC₇₁BM) and an unfused-ring nonfullerene acceptor (HF-PCIC). The optimized DRC4TB:PC₇₁BM and DRC4TB:HF-PCIC solar cells delivered comparable power conversion efficiencies (PCEs) of 8.53% and 8.68%, respectively.

Journal of Materials Chemistry C

A medium-bandgap small molecule donor compatible with both fullerene and unfused-ring nonfullerene acceptors for efficient organic solar cells†

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A medium-bandgap small molecule donor compatible with both fullerene and unfused-ring nonfullerene acceptors for efficient organic solar cells

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