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Nonfused-Core-Small-Molecule-Acceptor-Based Polymer Acceptors for All-Polymer Solar Cells

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Abstract

Polymerizing the narrow bandgap small-molecule architecture with a conjugated linking unit (or called the polymerized small molecule acceptors (PSMAs)) is a promising strategy to design polymer acceptors for efficient all polymer solar cells (all-PSCs). Currently, the fused-ring-based small molecule acceptors (SMAs) are preferred monomers to design efficient PSMAs, leaving the challenge of reducing the materials cost. In this work, we firstly employ nonfused-core SMA with simple synthetic procedures to design PSMAs (namely PBTI-H, PBTI-F and PBTI-Cl) to address this issue. Relative to the fused-ring based counterparts, these three PSMAs exhibit much higher figure-of-merit value. Additionally, a power-conversion efficiency of 8.80% is achieved in the PBTI-Cl-based all-PSC. The results offer an attractive approach to design low-cost PSMAs for efficient all-PSCs.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Nos. 22022509, 51873140 and 51820105003), Jiangsu Provincial Natural Science Foundation (No. BK20190095), Natural Science Foundation of the Jiangsu Higher Education Institutions of China (No. 21KJA150006), Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and Collaborative Innovation Center of Suzhou Nano Science and Technology.

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Authors and Affiliations

  1. Laboratory of Advanced Optoelectronic Materials, Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China

    Xian-Ming Zhu, Su-Nan Bao, Hang Yang, Hong-Yu Fan, Chen-Ling Fan, Xiao-Xiao Li, Ke-Wei Hu, Hao-Yu Cao, Chao-Hua Cui & Yong-Fang Li

  2. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

    Yong-Fang Li

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  1. Xian-Ming Zhu
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  2. Su-Nan Bao
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  3. Hang Yang
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  4. Hong-Yu Fan
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  10. Yong-Fang Li
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Correspondence to Chao-Hua Cui.

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Zhu, XM., Bao, SN., Yang, H. et al. Nonfused-Core-Small-Molecule-Acceptor-Based Polymer Acceptors for All-Polymer Solar Cells. Chin J Polym Sci 40, 960–967 (2022). https://doi.org/10.1007/s10118-022-2769-2

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