A narrow-bandgap non-fullerene acceptor constructed with an S,N-heteroacene up to a dodecamer in size

Jiaxin Guo; Xinyuan Jia; Xiangjian Cao; Tengfei He; Huazhe Liang; Wendi Shi; Zheng Xu; Ruohan Wang; Yaxiao Guo; Zhaoyang Yao; Xiangjian Wan; Guankui Long; Chenxi Li; Yongsheng Chen

doi:10.1039/D3TC02370B

A narrow-bandgap non-fullerene acceptor constructed with an S,N-heteroacene up to a dodecamer in size†

Jiaxin Guo,‡^a Xinyuan Jia,‡^a Xiangjian Cao,^a Tengfei He,^c Huazhe Liang,^a Wendi Shi,^a Zheng Xu,^a Ruohan Wang,^a Yaxiao Guo,*^b Zhaoyang Yao,

*^a Xiangjian Wan,

^a Guankui Long,

^c Chenxi Li^a and Yongsheng Chen

*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory and Institute of Elemento-Organic Chemistry, The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin 300071, China
E-mail: zyao@nankai.edu.cn, yschen99@nankai.edu.cn

^b State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin 300387, China
E-mail: yaxiaoguo@tiangong.edu.cn

^c School of Materials Science and Engineering, National Institute for Advanced Materials, Renewable Energy Conversion and Storage Center (RECAST), Nankai University, Tianjin, China

Abstract

Two exotic non-fullerene acceptors (JX1 and JX2) were effectively developed, and were designed to include, respectively, decameric and dodecameric S,N-heteroacenes. The tandem coupling of electron-donating and electron-deficient moieties on the molecular skeleton enhanced intramolecular charge transfer dramatically, endowing specifically JX2 with excellent absorption of light of low energy approaching 1000 nm. Finally, a JX2-based device outputs a good PCE of 10.83%, providing a rare yet highly promising molecular platform for achieving efficient OSCs with near-infrared-II absorption.

Journal of Materials Chemistry C

A narrow-bandgap non-fullerene acceptor constructed with an S,N-heteroacene up to a dodecamer in size†

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A narrow-bandgap non-fullerene acceptor constructed with an S,N-heteroacene up to a dodecamer in size

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