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p–n-Junction-Based Flexible Dye-Sensitized Solar Cells

Authors

  • Liping Heng,

    1. Beijing National Laboratory for Molecular Sciences (BNLMS) Center for Molecular Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190 (P. R. China)
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  • Xinyi Wang,

    1. School of Chemical and Environmental Engineering China University of Mining & Technology Beijing 100080 (P. R. China)
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  • Nailiang Yang,

    1. Beijing National Laboratory for Molecular Sciences (BNLMS) Center for Molecular Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190 (P. R. China)
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  • Jin Zhai,

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences (BNLMS) Center for Molecular Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190 (P. R. China)
    2. Beijing University of Aeronautics and Astronautics Beijing 100083 (P. R. China)
    • Beijing National Laboratory for Molecular Sciences (BNLMS) Center for Molecular Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190 (P. R. China).
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  • Meixiang Wan,

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences (BNLMS) Center for Molecular Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190 (P. R. China)
    • Beijing National Laboratory for Molecular Sciences (BNLMS) Center for Molecular Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190 (P. R. China).
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  • Lei Jiang

    1. Beijing National Laboratory for Molecular Sciences (BNLMS) Center for Molecular Science, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190 (P. R. China)
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Abstract

In this paper, a new type of flexible working electrode, TiO2/CuI/Cu, is reported, in which the p–n junction of TiO2–CuI is introduced into dye-sensitized solar cells (DSSCs) for the first time. The devices give a high conversion efficiency of up to 4.73% under 1 sun illumination. The excellent performance is ascribed to the existence of the p–n junction, which forms a single directional pathway for electron transport which benefits the charge separation, and improves the efficiency of the flexible solar cells as a result.

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