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Advanced Materials

Enhanced Photoelectrochemical Activity in All-Oxide Heterojunction Devices Based on Correlated “Metallic” Oxides

Authors

  • Brent A. Apgar,

    1. Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois, Urbana, IL, USA
    2. International Institute for Carbon Neutral Energy Research, Nishi-ku, Fukuoka, Japan
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  • Sungki Lee,

    1. Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois, Urbana, IL, USA
    2. International Institute for Carbon Neutral Energy Research, Nishi-ku, Fukuoka, Japan
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  • Lauren E. Schroeder,

    1. Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois, Urbana, IL, USA
    2. International Institute for Carbon Neutral Energy Research, Nishi-ku, Fukuoka, Japan
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  • Lane W. Martin

    Corresponding author
    1. Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois, Urbana, IL, USA
    2. International Institute for Carbon Neutral Energy Research, Nishi-ku, Fukuoka, Japan
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Abstract

n-n Schottky, n-n ohmic, and p-n Schottky heterojunctions based on TiO2/correlated “metallic” oxide couples exhibit strong solar-light absorption driven by the unique electronic structure of the “metallic” oxides. Photovoltaic and photocatalytic responses are driven by hot electron injection from the “metallic” oxide into the TiO2, enabling new modalities of operation for energy systems.

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