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Design principles for shift current photovoltaics

Author

Listed:
  • Ashley M. Cook

    (University of California
    University of Toronto)

  • Benjamin M. Fregoso

    (University of California)

  • Fernando de Juan

    (University of California)

  • Sinisa Coh

    (University of California
    Present address: Mechanical Engineering, Materials Science and Engineering, University of California Riverside, Riverside, California 92521, USA)

  • Joel E. Moore

    (University of California
    Lawrence Berkeley National Laboratory)

Abstract

While the basic principles of conventional solar cells are well understood, little attention has gone towards maximizing the efficiency of photovoltaic devices based on shift currents. By analysing effective models, here we outline simple design principles for the optimization of shift currents for frequencies near the band gap. Our method allows us to express the band edge shift current in terms of a few model parameters and to show it depends explicitly on wavefunctions in addition to standard band structure. We use our approach to identify two classes of shift current photovoltaics, ferroelectric polymer films and single-layer orthorhombic monochalcogenides such as GeS, which display the largest band edge responsivities reported so far. Moreover, exploring the parameter space of the tight-binding models that describe them we find photoresponsivities that can exceed 100 mA W−1. Our results illustrate the great potential of shift current photovoltaics to compete with conventional solar cells.

Suggested Citation

  • Ashley M. Cook & Benjamin M. Fregoso & Fernando de Juan & Sinisa Coh & Joel E. Moore, 2017. "Design principles for shift current photovoltaics," Nature Communications, Nature, vol. 8(1), pages 1-9, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14176
    DOI: 10.1038/ncomms14176
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    Cited by:

    1. Longjun Xiang & Hao Jin & Jian Wang, 2024. "Quantifying the photocurrent fluctuation in quantum materials by shot noise," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Zihan Liang & Xin Zhou & Le Zhang & Xiang-Long Yu & Yan Lv & Xuefen Song & Yongheng Zhou & Han Wang & Shuo Wang & Taihong Wang & Perry Ping Shum & Qian He & Yanjun Liu & Chao Zhu & Lin Wang & Xiaolong, 2023. "Strong bulk photovoltaic effect in engineered edge-embedded van der Waals structures," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    3. Yongheng Zhou & Xin Zhou & Xiang-Long Yu & Zihan Liang & Xiaoxu Zhao & Taihong Wang & Jinshui Miao & Xiaolong Chen, 2024. "Giant intrinsic photovoltaic effect in one-dimensional van der Waals grain boundaries," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    4. Liangting Ye & Wenju Zhou & Dajian Huang & Xiao Jiang & Qiangbing Guo & Xinyu Cao & Shaohua Yan & Xinyu Wang & Donghan Jia & Dequan Jiang & Yonggang Wang & Xiaoqiang Wu & Xiao Zhang & Yang Li & Hechan, 2023. "Manipulation of nonlinear optical responses in layered ferroelectric niobium oxide dihalides," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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