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Efficient Light Harvesting with Micropatterned 3D Pyramidal Photoanodes in Dye-Sensitized Solar Cells

Authors

  • Sanghyuk Wooh,

    1. The National Initiative Creative Research, Center for Intelligent Hybrids & the World Class, University Program for Chemical Convergence for Energy and Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Hyunsik Yoon,

    1. Department of Chemical and Biomolecular Engineering, Seoul National University of Science & Technology, Seoul 139-743, Korea
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Jae-Hyun Jung,

    1. The National Creative Research Center for Active Plasmonics Application, Systems, School of Electrical Engineering, Seoul National University, Seoul 151-774, Korea
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  • Yong-Gun Lee,

    1. The WCU Department of Energy Engineering and Center for Next, Generation Dye-Sensitized Solar Cells, Hanyang University, Seoul 133-791, Korea
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  • Jai Hyun Koh,

    1. The National Initiative Creative Research, Center for Intelligent Hybrids & the World Class, University Program for Chemical Convergence for Energy and Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
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  • Byoungho Lee,

    1. The National Creative Research Center for Active Plasmonics Application, Systems, School of Electrical Engineering, Seoul National University, Seoul 151-774, Korea
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  • Yong Soo Kang,

    Corresponding author
    1. The WCU Department of Energy Engineering and Center for Next, Generation Dye-Sensitized Solar Cells, Hanyang University, Seoul 133-791, Korea
    • The WCU Department of Energy Engineering and Center for Next, Generation Dye-Sensitized Solar Cells, Hanyang University, Seoul 133-791, Korea.
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  • Kookheon Char

    Corresponding author
    1. The National Initiative Creative Research, Center for Intelligent Hybrids & the World Class, University Program for Chemical Convergence for Energy and Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
    • The National Initiative Creative Research, Center for Intelligent Hybrids & the World Class, University Program for Chemical Convergence for Energy and Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
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Abstract

original image

3D TiO2 photoanodes in dye-sensitized solar cells (DSCs) are fabricated by the soft lithographic technique for efficient light trapping. An extended strategy to the construction of randomized pyramid structure is developed by the conventional wet-etching of a silicon wafer for low-cost fabrication. Moreover, the futher enhancement of light absorption resulting in photocurrent increase is achieved by combining the 3D photoanode with a conventional scattering layer.

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