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Advanced Materials

Co-evaporant Induced Crystalline Donor: Acceptor Blends in Organic Solar Cells

Authors

  • Toshihiko Kaji,

    Corresponding author
    1. Institute for Molecular Science, 5-1 Higashiyama, Okazaki, 444-8787, Japan
    2. The Graduate University for Advanced Studies [Sokendai], 5-1 Higashiyama, Okazaki, 444-8787, Japan
    3. Department of Chemical Engineering, University of Rochester, 206 Gavett Hall, Rochester, New York 14627, USA
    • Institute for Molecular Science, 5-1 Higashiyama, Okazaki, 444-8787, Japan.
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  • Minlu Zhang,

    1. Department of Chemical Engineering, University of Rochester, 206 Gavett Hall, Rochester, New York 14627, USA
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  • Satoru Nakao,

    1. Institute for Molecular Science, 5-1 Higashiyama, Okazaki, 444-8787, Japan
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  • Kai Iketaki,

    1. Institute for Molecular Science, 5-1 Higashiyama, Okazaki, 444-8787, Japan
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  • Kazuya Yokoyama,

    1. Institute for Molecular Science, 5-1 Higashiyama, Okazaki, 444-8787, Japan
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  • Ching W. Tang,

    1. Department of Chemical Engineering, University of Rochester, 206 Gavett Hall, Rochester, New York 14627, USA
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  • Masahiro Hiramoto

    1. Institute for Molecular Science, 5-1 Higashiyama, Okazaki, 444-8787, Japan
    2. The Graduate University for Advanced Studies [Sokendai], 5-1 Higashiyama, Okazaki, 444-8787, Japan
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Abstract

A novel method for crystallizing donor:acceptor blend films of small molecules in organic solar cells is developed. This method utilizes a liquid as a non-sticking co-evaporant during vacuum deposition. Striking enhancement in photocurrent generation is achieved in organic solar cells without exception, based on a variety of blend films produced by this method.

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