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Enhanced Photoconversion Efficiency of All-Flexible Dye-Sensitized Solar Cells Based on a Ti Substrate with TiO2 Nanoforest Underlayer

Authors

  • Jiang An,

    1. State Key Laboratory of Fine Chemicals, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, 116024 Dalian, PR of China
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  • Wei Guo,

    1. State Key Laboratory of Fine Chemicals, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, 116024 Dalian, PR of China
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  • Tingli Ma

    Corresponding author
    1. State Key Laboratory of Fine Chemicals, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, 116024 Dalian, PR of China
    • State Key Laboratory of Fine Chemicals, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, 116024 Dalian, PR of China.
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Abstract

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An easily prepared TiO2 nanoforest underlayer improves the photovoltaic performance of Ti substrate-based dye-sensitized solar cells (DSSCs). A high photoconversion efficiency of 8.46% is reached, which is almost 2.5 times that of the DSSCs without surface treatment of the flexible substrates. The nanoforest underlayer increases both the surface roughness of the substrate and the electrical contact between the Ti substrate and the screen-printed TiO2 nanoparticles.

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