A high-performance non-fullerene electron acceptor with bisalkylthiothiophene π-bridges for organic photovoltaics

Zhaolong Wang; Kunxiang Huang; Xianjie Chen; Yating Xu; Zheng Xu; Tian He; Shouchun Yin; Huayu Qiu; Miaomiao Li; Qian Zhang

doi:10.1039/C9TC05166J

A high-performance non-fullerene electron acceptor with bisalkylthiothiophene π-bridges for organic photovoltaics†

Zhaolong Wang,‡^a Kunxiang Huang,‡^b Xianjie Chen,^a Yating Xu,^a Zheng Xu,^c Tian He,^a Shouchun Yin,

^a Huayu Qiu,

*^ac Miaomiao Li*^b and Qian Zhang

*^a

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* Corresponding authors

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

^b School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, P. R. China
E-mail: miaomiao.li@tju.edu.cn

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

Abstract

A new non-fullerene small molecule acceptor IDT2ST-4F bearing a bisalkylthiothiophene unit as the π-bridge was designed and synthesized, which exhibited a low optical bandgap of 1.43 eV. The optimized organic solar cells based on PBDB-T:IDT2ST-4F gave a high power conversion efficiency (PCE) of 11.43% with a relatively low energy loss of 0.58 eV.

Journal of Materials Chemistry C

A high-performance non-fullerene electron acceptor with bisalkylthiothiophene π-bridges for organic photovoltaics†

Abstract

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A high-performance non-fullerene electron acceptor with bisalkylthiothiophene π-bridges for organic photovoltaics

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