Advanced Materials

Co-Evaporated Bulk Heterojunction Solar Cells with >6.0% Efficiency

Authors

  • Guo Chen,

    1. Department of Organic Device Engineering, Graduate School of Engineering, and the Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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  • Hisahiro Sasabe,

    Corresponding author
    1. Department of Organic Device Engineering, Graduate School of Engineering, and the Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
    • Department of Organic Device Engineering, Graduate School of Engineering, and the Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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  • Zhongqiang Wang,

    1. Department of Organic Device Engineering, Graduate School of Engineering, and the Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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  • Xiao-Feng Wang,

    1. Department of Organic Device Engineering, Graduate School of Engineering, and the Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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  • Ziruo Hong,

    Corresponding author
    1. Department of Organic Device Engineering, Graduate School of Engineering, and the Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
    • Department of Organic Device Engineering, Graduate School of Engineering, and the Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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  • Yang Yang,

    Corresponding author
    1. Department of Materials Science and Engineering, University of California-Los Angeles, Los Angeles, CA 90095, USA
    • Department of Materials Science and Engineering, University of California-Los Angeles, Los Angeles, CA 90095, USA.
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  • Junji Kido

    1. Department of Organic Device Engineering, Graduate School of Engineering, and the Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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Abstract

High power conversion efficiencies of over 6.0% are achieved with a squaraine compound from co-deposited photovoltaic cells with a simple device structure, in which the efficiency is insensitive to blending ratios and thicknesses of photoactive layers. It demonstrates the huge potential of low molecular weight materials in photovoltaic cells via vacuum processes.

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