Triplet Tellurophene‐Based Acceptors for Organic Solar Cells |
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| Authors: | Lei Yang Wenxing Gu Lei Lv Yusheng Chen Yufei Yang Pan Ye Jianfei Wu Ling Hong Dr. Aidong Peng Prof. Hui Huang |
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| Affiliation: | 1. College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, P. R. China;2. School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing, P. R. China |
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| Abstract: | Triplet materials have been employed to achieve high‐performing organic solar cells (OSCs) by extending the exciton lifetime and diffusion distances, while the triplet non‐fullerene acceptor materials have never been reported for bulk heterojunction OSCs. Herein, for the first time, three triplet molecular acceptors based on tellurophene with different degrees of ring fusing were designed and synthesized for OSCs. Significantly, these molecules have long exciton lifetime and diffusion lengths, leading to efficient power conversion efficiency (7.52 %), which is the highest value for tellurophene‐based OSCs. The influence of the extent of ring fusing on molecular geometry and OSCs performance was investigated to show the power conversion efficiencies (PCEs) continuously increased along with increasing the extent of ring fusing. |
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| Keywords: | non-fullerene acceptors organic solar cells tellurophene triplet state |
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