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Asymmetric indenothiophene-based non-fullerene acceptors for efficient polymer solar cells

含茚并噻吩的不对称非富勒烯受体材料及其高性能聚合物太阳电池

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Abstract

Three new asymmetric acceptor-donor-acceptor structured molecules are designed and synthesized by incorporating indenothiophene as the central core. Their bandgaps and energy levels can be easily tuned by varying the electron withdrawing ability of the terminal groups such as dicyanovinyl, 3-ethylrhodanine, and 2-(1,1-dicyanomethylene)-3-ethyl-rhodanine. Inverted polymer solar cells using these molecules as acceptors and PTB7-Th as a donor material afford a highest power conversion efficiency of 7.49% with a high open circuit voltage of 1.02 V as well as a low energy loss of 0.59 eV.

摘要

本文设计合成了三个新型含茚并噻吩的“受体-给体-受体”型不对称非富勒烯受体材料. 通过使用具有不同吸电子能力的末端基团(如:二氰乙烯基、3-乙基绕丹宁、2-二氰亚甲基-3-乙基绕丹宁)实现了目标材料的带隙和能级调控. 以这些非富勒烯受体材料与PTB7-Th给体材料共混制备的倒置聚合物太阳电池, 实现了高达7.49%的光电转换效率和1.02伏的高开路电压以及0.59电子伏的低能量损失.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (U1605241, 51503209 and 21502194), the Natural Science Foundation of Fujian Province (2015H0050), the Key Research Program of Frontier Sciences, Chinese Academy of Sciences (QYZDB-SSW-SLH032), and the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB20000000).

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Author notes

  1. These authors contributed equally to this paper.

Authors and Affiliations

  1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China

    Changquan Tang  (汤昌泉), Shan-Ci Chen  (陈善慈), Qi Shang  (尚启) & Qingdong Zheng  (郑庆东)

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Changquan Tang  (汤昌泉)

Authors
  1. Changquan Tang  (汤昌泉)
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  2. Shan-Ci Chen  (陈善慈)
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  3. Qi Shang  (尚启)
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  4. Qingdong Zheng  (郑庆东)
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Corresponding author

Correspondence to Qingdong Zheng  (郑庆东).

Additional information

Author contributions Tang C and Chen SC contributed equally to this work. Tang C and Zheng Q proposed and designed the project. Tang C synthesized the materials, and Chen SC fabricated and characterized the devices. Tang C, Chen SC and Zheng Q wrote the paper. Shang Q synthesized the starting materials. All authors contributed to the general discussion.

Conflict of interset The authors declare that they have no conflict of interest.

Supplementary information TGA curves, XRD patterns, SCLC curves and device parameters for the OSCs fabricated at different conditions are available in the online version of the paper.

Changquan Tang received his BSc degree from Jiangxi Normal University in 2007 and MSc degree in organic chemistry from Central South University in China in 2010, and then he joined Prof. Qingdong Zheng’s group. He is currently pursuing his PhD in the University of Chinese Academy of Sciences. His research interests focus on the design, synthesis and applications of photon-active materials and organic semiconductor materials.

Shan-Ci Chen received his BSc degree in chemistry from Xiamen University in 2005 and PhD degree in physical chemistry from Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences in 2010. He is now an associate professor in Prof. Qingdong Zheng’s group at FJIRSM, Chinese Academy of Sciences. His interest involves the design, synthesis, and characterizations of materials for various applications including organic field-effect transistors, organic solar cells, etc.

Qingdong Zheng obtained his PhD degree from the State University of New York at Buffalo, USA in 2005. After carrying out his postdoctoral research at Johns Hopkins University, he joined FJIRSM, Chinese Academy of Sciences, and became a professor in 2010. His main interests focus on multifunctional molecular materials and devices and in particular on the fields of semiconducting materials for organic solar cells.

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Tang, C., Chen, SC., Shang, Q. et al. Asymmetric indenothiophene-based non-fullerene acceptors for efficient polymer solar cells. Sci. China Mater. 60, 707–716 (2017). https://doi.org/10.1007/s40843-017-9059-3

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  • DOI: https://doi.org/10.1007/s40843-017-9059-3

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