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Role of domain walls in the abnormal photovoltaic effect in BiFeO3

Author

Listed:
  • Akash Bhatnagar

    (Max Planck Institute of Microstructure Physics)

  • Ayan Roy Chaudhuri

    (Institute of Electronic Materials and Devices, Leibniz University)

  • Young Heon Kim

    (Korea Research Institute of Standards and Science)

  • Dietrich Hesse

    (Max Planck Institute of Microstructure Physics)

  • Marin Alexe

    (Max Planck Institute of Microstructure Physics
    University of Warwick)

Abstract

Recently, the anomalous photovoltaic (PV) effect in BiFeO3 (BFO) thin films, which resulted in open circuit voltages (Voc) considerably larger than the band gap of the material, has generated a revival of the entire field of photoferroelectrics. Here, via temperature-dependent PV studies, we prove that the bulk photovoltaic (BPV) effect, which has been studied in the past for many non-centrosymmetric materials, is at the origin of the anomalous PV effect in BFO films. Moreover, we show that irrespective of the measurement geometry, Voc as high as 50 V can be achieved by controlling the conductivity of domain walls (DW). We also show that photoconductivity of the DW is markedly higher than in the bulk of BFO.

Suggested Citation

  • Akash Bhatnagar & Ayan Roy Chaudhuri & Young Heon Kim & Dietrich Hesse & Marin Alexe, 2013. "Role of domain walls in the abnormal photovoltaic effect in BiFeO3," Nature Communications, Nature, vol. 4(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3835
    DOI: 10.1038/ncomms3835
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    1. Xu Zhang & Tongshuai Zhu & Shuai Zhang & Zhongqiang Chen & Anke Song & Chong Zhang & Rongzheng Gao & Wei Niu & Yequan Chen & Fucong Fei & Yilin Tai & Guoan Li & Binghui Ge & Wenkai Lou & Jie Shen & Ha, 2024. "Light-induced giant enhancement of nonreciprocal transport at KTaO3-based interfaces," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Yue Li & Jun Fu & Xiaoyu Mao & Chen Chen & Heng Liu & Ming Gong & Hualing Zeng, 2021. "Enhanced bulk photovoltaic effect in two-dimensional ferroelectric CuInP2S6," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    3. Wei Qin & Wajid Ali & Jianfeng Wang & Yong Liu & Xiaolan Yan & Pengfei Zhang & Zhaochi Feng & Hao Tian & Yanfeng Yin & Wenming Tian & Can Li, 2023. "Suppressing non-radiative recombination in metal halide perovskite solar cells by synergistic effect of ferroelasticity," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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