Passivation of ZnO Nanowire Guests and 3D Inverse Opal Host Photoanodes for Dye-Sensitized Solar Cells

Authors

  • Philippe Labouchere,

    1. Laboratory of Photonics and Interfaces, Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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  • Aravind Kumar Chandiran,

    1. Laboratory of Photonics and Interfaces, Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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  • Thomas Moehl,

    1. Laboratory of Photonics and Interfaces, Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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  • Hauke Harms,

    1. Laboratory of Photonics and Interfaces, Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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  • Sudam Chavhan,

    1. Energy Division, IK4-CIDETEC, Parque Tecnológico de San Sebastián P° Miramón 196, Donostia-San Sebastián, Gipuzkoa, Spain
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  • Ramon Tena-Zaera,

    1. Energy Division, IK4-CIDETEC, Parque Tecnológico de San Sebastián P° Miramón 196, Donostia-San Sebastián, Gipuzkoa, Spain
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  • Mohammad Khaja Nazeeruddin,

    1. Laboratory of Photonics and Interfaces, Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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  • Michael Graetzel,

    1. Laboratory of Photonics and Interfaces, Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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  • Nicolas Tetreault

    Corresponding author
    1. Laboratory of Photonics and Interfaces, Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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Abstract

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A hierarchical host-guest nanostructured photoanode is reported for dye-sensitized solar cells. It is composed of ZnO nano­wires grown in situ into the macropores of a 3D ZnO inverse opal structure, which acts both as a seed layer and as a conductive backbone host. Using a combination of self-assembly, hydrothermal or electrodeposition of single crystalline ZnO nanowires and TiO2 passivation, a novel photoanode with scattering capability for optimal light harvesting is fabricated.

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