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Unassisted photoelectrochemical water splitting exceeding 7% solar-to-hydrogen conversion efficiency using photon recycling

Author

Listed:
  • Xinjian Shi

    (Yonsei University
    Stanford University)

  • Hokyeong Jeong

    (Pohang University of Science and Technology)

  • Seung Jae Oh

    (Pohang University of Science and Technology)

  • Ming Ma

    (School of Chemical Engineering and SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University)

  • Kan Zhang

    (Yonsei University)

  • Jeong Kwon

    (School of Chemical Engineering and SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University)

  • In Taek Choi

    (Global GET-Future Lab, Korea University)

  • Il Yong Choi

    (Pohang University of Science and Technology)

  • Hwan Kyu Kim

    (Global GET-Future Lab, Korea University)

  • Jong Kyu Kim

    (Pohang University of Science and Technology)

  • Jong Hyeok Park

    (Yonsei University)

Abstract

Various tandem cell configurations have been reported for highly efficient and spontaneous hydrogen production from photoelectrochemical solar water splitting. However, there is a contradiction between two main requirements of a front photoelectrode in a tandem cell configuration, namely, high transparency and high photocurrent density. Here we demonstrate a simple yet highly effective method to overcome this contradiction by incorporating a hybrid conductive distributed Bragg reflector on the back side of the transparent conducting substrate for the front photoelectrochemical electrode, which functions as both an optical filter and a conductive counter-electrode of the rear dye-sensitized solar cell. The hybrid conductive distributed Bragg reflectors were designed to be transparent to the long-wavelength part of the incident solar spectrum (λ>500 nm) for the rear solar cell, while reflecting the short-wavelength photons (λ

Suggested Citation

  • Xinjian Shi & Hokyeong Jeong & Seung Jae Oh & Ming Ma & Kan Zhang & Jeong Kwon & In Taek Choi & Il Yong Choi & Hwan Kyu Kim & Jong Kyu Kim & Jong Hyeok Park, 2016. "Unassisted photoelectrochemical water splitting exceeding 7% solar-to-hydrogen conversion efficiency using photon recycling," Nature Communications, Nature, vol. 7(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11943
    DOI: 10.1038/ncomms11943
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    Cited by:

    1. Zhao, Ning & Wang, Jiangjiang, 2024. "Solar full spectrum management in low and medium temperature light-driven chemical hydrogen synthesis - A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 196(C).
    2. Hamdani, I.R. & Bhaskarwar, A.N., 2021. "Recent progress in material selection and device designs for photoelectrochemical water-splitting," Renewable and Sustainable Energy Reviews, Elsevier, vol. 138(C).
    3. Feng Liang & Roel van de Krol & Fatwa F. Abdi, 2024. "Assessing elevated pressure impact on photoelectrochemical water splitting via multiphysics modeling," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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