Advanced Materials

Strong Efficiency Improvements in Ultra-low-Cost Inorganic Nanowire Solar Cells

Authors

  • Kevin P. Musselman,

    Corresponding author
    1. Department of Materials Science, University of Cambridge, Pembroke St., Cambridge, CB2 3QZ (United Kingdom)
    • Department of Materials Science, University of Cambridge, Pembroke St., Cambridge, CB2 3QZ (United Kingdom).
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  • Andreas Wisnet,

    1. Department of Chemistry, Ludwig-Maximilians University, Butenandtstr. 11, Haus E, 81377 Munich (Germany)
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  • Diana C. Iza,

    1. Department of Materials Science, University of Cambridge, Pembroke St., Cambridge, CB2 3QZ (United Kingdom)
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  • Holger C. Hesse,

    1. Department of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians University, Amalienstr. 54, D-80799 Munich (Germany)
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  • Christina Scheu,

    1. Department of Chemistry, Ludwig-Maximilians University, Butenandtstr. 11, Haus E, 81377 Munich (Germany)
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  • Judith L. MacManus-Driscoll,

    Corresponding author
    1. Department of Materials Science, University of Cambridge, Pembroke St., Cambridge, CB2 3QZ (United Kingdom)
    • Department of Materials Science, University of Cambridge, Pembroke St., Cambridge, CB2 3QZ (United Kingdom).
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  • Lukas Schmidt-Mende

    Corresponding author
    1. Department of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians University, Amalienstr. 54, D-80799 Munich (Germany)
    • Department of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians University, Amalienstr. 54, D-80799 Munich (Germany)
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Abstract

Cu2O-ZnO nanowire solar cells are synthesized by electrodeposition from solutions near room temperature. A high-quality, self-assembling, nanostructured heterojunction is produced, which is found to dramatically improve the charge collection efficiency in these ultra-low-cost devices. Incident-photon-to-electron conversion efficiencies approaching unity are measured and considerable efficiency improvements are observed.

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