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Tailoring the photoelectrochemistry of catalytic metal-insulator-semiconductor (MIS) photoanodes by a dissolution method

Author

Listed:
  • G. Loget

    (Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR6226-ScanMAT-UMS2001)

  • C. Mériadec

    (Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251)

  • V. Dorcet

    (Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR6226-ScanMAT-UMS2001)

  • B. Fabre

    (Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR6226-ScanMAT-UMS2001)

  • A. Vacher

    (Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR6226-ScanMAT-UMS2001)

  • S. Fryars

    (Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR6226-ScanMAT-UMS2001)

  • S. Ababou-Girard

    (Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251)

Abstract

Apart from being key structures of modern microelectronics, metal-insulator-semiconductor (MIS) junctions are highly promising electrodes for artificial leaves, i.e. photoelectrochemical cells that can convert sunlight into energy-rich fuels. Here, we demonstrate that homogeneous Si/SiOx/Ni MIS junctions, employed as photoanodes, can be functionalized with a redox-active species and simultaneously converted into high-photovoltage inhomogeneous MIS junctions by electrochemical dissolution. We also report on the considerable enhancement of performance towards urea oxidation, induced by this process. Finally, we demonstrate that both phenomena can be employed synergistically to design highly-efficient Si-based photoanodes. These findings open doors for the manufacturing of artificial leaves that can generate H2 under solar illumination using contaminated water.

Suggested Citation

  • G. Loget & C. Mériadec & V. Dorcet & B. Fabre & A. Vacher & S. Fryars & S. Ababou-Girard, 2019. "Tailoring the photoelectrochemistry of catalytic metal-insulator-semiconductor (MIS) photoanodes by a dissolution method," Nature Communications, Nature, vol. 10(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11432-1
    DOI: 10.1038/s41467-019-11432-1
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    Cited by:

    1. Sang Eon Jun & Youn-Hye Kim & Jaehyun Kim & Woo Seok Cheon & Sungkyun Choi & Jinwook Yang & Hoonkee Park & Hyungsoo Lee & Sun Hwa Park & Ki Chang Kwon & Jooho Moon & Soo-Hyun Kim & Ho Won Jang, 2023. "Atomically dispersed iridium catalysts on silicon photoanode for efficient photoelectrochemical water splitting," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Fei He & Seunghyun Weon & Woojung Jeon & Myoung Won Chung & Wonyong Choi, 2021. "Self-wetting triphase photocatalysis for effective and selective removal of hydrophilic volatile organic compounds in air," Nature Communications, Nature, vol. 12(1), pages 1-12, December.

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