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Flexible, Polymer-Supported, Si Wire Array Photoelectrodes

Authors

  • Joshua M. Spurgeon,

    1. California Institute of Technology, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. m/c 127-72, Pasadena, CA 91125 (USA)
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  • Shannon W. Boettcher,

    1. California Institute of Technology, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. m/c 127-72, Pasadena, CA 91125 (USA)
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  • Michael D. Kelzenberg,

    1. California Institute of Technology, Division of Engineering and Applied Science, 1200 E. California Blvd. m/c 128-95, Pasadena, CA 91125 (USA)
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  • Bruce S. Brunschwig,

    1. California Institute of Technology, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. m/c 127-72, Pasadena, CA 91125 (USA)
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  • Harry A. Atwater,

    Corresponding author
    1. California Institute of Technology, Division of Engineering and Applied Science, 1200 E. California Blvd. m/c 128-95, Pasadena, CA 91125 (USA)
    • California Institute of Technology, Division of Engineering and Applied Science, 1200 E. California Blvd. m/c 128-95, Pasadena, CA 91125 (USA).
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  • Nathan S. Lewis

    Corresponding author
    1. California Institute of Technology, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. m/c 127-72, Pasadena, CA 91125 (USA)
    • California Institute of Technology, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. m/c 127-72, Pasadena, CA 91125 (USA)
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Abstract

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Arrays of oriented, crystalline Si wires are transferred into flexible, transparent polymer films. The polymer-supported Si wire arrays in liquid-junction photoelectrochemical cells yield current-potential behavior similar to the Si wires attached to the brittle growth substrate. These systems offer the potential for attaining high solar energy-conversion efficiencies using modest diffusion length, readily grown, crystalline Si in a flexible, processable form.

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