Application of a Bilayer TiO2 Nanofiber Photoanode for Optimization of Dye-Sensitized Solar Cells

Authors

  • Lijun Yang,

    1. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, HKSAR
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  • Wallace Woon-Fong Leung

    Corresponding author
    1. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, HKSAR
    • Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, HKSAR.

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Abstract

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The power conversion efficiency of dye-sensitized solar cells can be increased above 8% by using a one-dimensional bilayer nanofiber photoanode. The smaller-diameter nanofiber layer with a large surface for adsorbed sensitized dyes efficiently harvests sunlight and transports photogenerated electrons, while the bigger-diameter nanofiber layer reflects and traps sunlight in the photoanode. Both nanofiber layers can be fabricated readily by electrospinning.

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