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High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor

Author

Listed:
  • Zhenrong Jia

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Shucheng Qin

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Lei Meng

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Qing Ma

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Indunil Angunawela

    (North Carolina State University)

  • Jinyuan Zhang

    (Chinese Academy of Sciences)

  • Xiaojun Li

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yakun He

    (Friedrich-Alexander University Erlangen-Nürnberg
    Erlangen Graduate School in Advanced Optical Technologies (SAOT))

  • Wenbin Lai

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Ning Li

    (Friedrich-Alexander University Erlangen-Nürnberg
    Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (HI ERN))

  • Harald Ade

    (North Carolina State University)

  • Christoph J. Brabec

    (Friedrich-Alexander University Erlangen-Nürnberg
    Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (HI ERN))

  • Yongfang Li

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Soochow University)

Abstract

Tandem organic solar cells are based on the device structure monolithically connecting two solar cells to broaden overall absorption spectrum and utilize the photon energy more efficiently. Herein, we demonstrate a simple strategy of inserting a double bond between the central core and end groups of the small molecule acceptor Y6 to extend its conjugation length and absorption range. As a result, a new narrow bandgap acceptor BTPV-4F was synthesized with an optical bandgap of 1.21 eV. The single-junction devices based on BTPV-4F as acceptor achieved a power conversion efficiency of over 13.4% with a high short-circuit current density of 28.9 mA cm−2. With adopting BTPV-4F as the rear cell acceptor material, the resulting tandem devices reached a high power conversion efficiency of over 16.4% with good photostability. The results indicate that BTPV-4F is an efficient infrared-absorbing narrow bandgap acceptor and has great potential to be applied into tandem organic solar cells.

Suggested Citation

  • Zhenrong Jia & Shucheng Qin & Lei Meng & Qing Ma & Indunil Angunawela & Jinyuan Zhang & Xiaojun Li & Yakun He & Wenbin Lai & Ning Li & Harald Ade & Christoph J. Brabec & Yongfang Li, 2021. "High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-020-20431-6
    DOI: 10.1038/s41467-020-20431-6
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    Cited by:

    1. Zhenrong Jia & Qing Ma & Zeng Chen & Lei Meng & Nakul Jain & Indunil Angunawela & Shucheng Qin & Xiaolei Kong & Xiaojun Li & Yang (Michael) Yang & Haiming Zhu & Harald Ade & Feng Gao & Yongfang Li, 2023. "Near-infrared absorbing acceptor with suppressed triplet exciton generation enabling high performance tandem organic solar cells," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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