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Shift current photovoltaic effect in a ferroelectric charge-transfer complex

Author

Listed:
  • M. Nakamura

    (RIKEN Center for Emergent Matter Science (CEMS)
    PRESTO, Japan Science and Technology Agency (JST))

  • S. Horiuchi

    (Flexible Electronics Research Center (FLEC), National Institute of Advanced Industrial Science and Technology (AIST))

  • F. Kagawa

    (RIKEN Center for Emergent Matter Science (CEMS))

  • N. Ogawa

    (RIKEN Center for Emergent Matter Science (CEMS))

  • T. Kurumaji

    (RIKEN Center for Emergent Matter Science (CEMS))

  • Y. Tokura

    (RIKEN Center for Emergent Matter Science (CEMS)
    University of Tokyo)

  • M. Kawasaki

    (RIKEN Center for Emergent Matter Science (CEMS)
    University of Tokyo)

Abstract

Shift current is a steady-state photocurrent generated in non-centrosymmetric single crystals and has been considered to be one of the major origins of the bulk photovoltaic effect. The mechanism of this effect is the transfer of photogenerated charges by the shift of the wave functions, and its amplitude is closely related to the polarization of the electronic origin. Here, we report the photovoltaic effect in an organic molecular crystal tetrathiafulvalene-p-chloranil with a large ferroelectric polarization mostly induced by the intermolecular charge transfer. We observe a fairly large zero-bias photocurrent with visible-light irradiation and switching of the current direction by the reversal of the polarization. Furthermore, we reveal that the travel distance of photocarriers exceeds 200 μm. These results unveil distinct features of the shift current and the potential application of ferroelectric organic molecular compounds for novel optoelectric devices.

Suggested Citation

  • M. Nakamura & S. Horiuchi & F. Kagawa & N. Ogawa & T. Kurumaji & Y. Tokura & M. Kawasaki, 2017. "Shift current photovoltaic effect in a ferroelectric charge-transfer complex," Nature Communications, Nature, vol. 8(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00250-y
    DOI: 10.1038/s41467-017-00250-y
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    Cited by:

    1. Tingting Zhu & Jie Bie & Chengmin Ji & Xinyuan Zhang & Lina Li & Xitao Liu & Xiao-Ying Huang & Wei Fa & Shuang Chen & Junhua Luo, 2022. "Circular polarized light-dependent anomalous photovoltaic effect from achiral hybrid perovskites," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. Pritam Sadhukhan & Shu-Qi Wu & Shinji Kanegawa & Sheng-Qun Su & Xiaopeng Zhang & Takumi Nakanishi & Jeremy Ian Long & Kaige Gao & Rintaro Shimada & Hajime Okajima & Akira Sakamoto & Joy G. Chiappella , 2023. "Energy conversion and storage via photoinduced polarization change in non-ferroelectric molecular [CoGa] crystals," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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