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Printed assemblies of GaAs photoelectrodes with decoupled optical and reactive interfaces for unassisted solar water splitting

Author

Listed:
  • Dongseok Kang

    (University of Southern California)

  • James L. Young

    (National Renewable Energy Laboratory)

  • Haneol Lim

    (University of Southern California)

  • Walter E. Klein

    (National Renewable Energy Laboratory)

  • Huandong Chen

    (University of Southern California)

  • Yuzhou Xi

    (University of Southern California)

  • Boju Gai

    (University of Southern California)

  • Todd G. Deutsch

    (National Renewable Energy Laboratory)

  • Jongseung Yoon

    (University of Southern California
    University of Southern California)

Abstract

Despite their excellent photophysical properties and record-high solar-to-hydrogen conversion efficiency, the high cost and limited stability of III–V compound semiconductors prohibit their practical application in solar-driven photoelectrochemical water splitting. Here we present a strategy for III–V photocatalysis that can circumvent these difficulties via printed assemblies of epitaxially grown compound semiconductors. A thin film stack of GaAs-based epitaxial materials is released from the growth wafer and printed onto a non-native transparent substrate to form an integrated photocatalytic electrode for solar hydrogen generation. The heterogeneously integrated electrode configuration together with specialized epitaxial design serve to decouple the material interfaces for illumination and electrocatalysis. Subsequently, this allows independent control and optimization of light absorption, carrier transport, charge transfer, and material stability. Using this approach, we construct a series-connected wireless tandem system of GaAs photoelectrodes and demonstrate 13.1% solar-to-hydrogen conversion efficiency of unassisted-mode water splitting.

Suggested Citation

  • Dongseok Kang & James L. Young & Haneol Lim & Walter E. Klein & Huandong Chen & Yuzhou Xi & Boju Gai & Todd G. Deutsch & Jongseung Yoon, 2017. "Printed assemblies of GaAs photoelectrodes with decoupled optical and reactive interfaces for unassisted solar water splitting," Nature Energy, Nature, vol. 2(5), pages 1-5, May.
    • Handle: RePEc:nat:natene:v:2:y:2017:i:5:d:10.1038_nenergy.2017.43
    DOI: 10.1038/nenergy.2017.43
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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. Wan Jae Dong & Yixin Xiao & Ke R. Yang & Zhengwei Ye & Peng Zhou & Ishtiaque Ahmed Navid & Victor S. Batista & Zetian Mi, 2023. "Pt nanoclusters on GaN nanowires for solar-asssisted seawater hydrogen evolution," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. Austin M. K. Fehr & Ayush Agrawal & Faiz Mandani & Christian L. Conrad & Qi Jiang & So Yeon Park & Olivia Alley & Bor Li & Siraj Sidhik & Isaac Metcalf & Christopher Botello & James L. Young & Jacky E, 2023. "Integrated halide perovskite photoelectrochemical cells with solar-driven water-splitting efficiency of 20.8%," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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