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Advanced Materials

Silicon Filaments in Silicon Oxide for Next-Generation Photovoltaics

Authors

  • Peter Cuony,

    1. Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering, École Polytechnique Fédérale de Lausanne, 2000 Neuchâtel, Switzerland
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  • Duncan T. L. Alexander,

    Corresponding author
    1. Interdisciplinary Centre for Electron Microscopy, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
    • Interdisciplinary Centre for Electron Microscopy, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
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  • Ivan Perez-Wurfl,

    1. School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
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  • Matthieu Despeisse,

    1. Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering, École Polytechnique Fédérale de Lausanne, 2000 Neuchâtel, Switzerland
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  • Gregory Bugnon,

    1. Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering, École Polytechnique Fédérale de Lausanne, 2000 Neuchâtel, Switzerland
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  • Mathieu Boccard,

    1. Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering, École Polytechnique Fédérale de Lausanne, 2000 Neuchâtel, Switzerland
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  • Thomas Söderström,

    1. Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering, École Polytechnique Fédérale de Lausanne, 2000 Neuchâtel, Switzerland
    2. School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
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  • Aïcha Hessler-Wyser,

    1. Interdisciplinary Centre for Electron Microscopy, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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  • Cécile Hébert,

    1. Interdisciplinary Centre for Electron Microscopy, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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  • Christophe Ballif

    1. Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering, École Polytechnique Fédérale de Lausanne, 2000 Neuchâtel, Switzerland
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Abstract

Nanometer wide silicon filaments embedded in an amorphous silicon oxide matrix are grown at low temperatures over a large area. The optical and electrical properties of these mixed-phase nanomaterials can be tuned independently, allowing for advanced light management in high efficiency thin-film silicon solar cells and for band-gap tuning via quantum confinement in third-generation photovoltaics.

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