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Advanced Materials

A Robust Inter-Connecting Layer for Achieving High Performance Tandem Polymer Solar Cells

Authors

  • Jun 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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  • Rui Zhu,

    1. Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095, USA
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  • Ziruo Hong,

    1. Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095, USA
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  • Youjun He,

    1. Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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  • Ankit Kumar,

    1. Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095, USA
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  • Yongfang Li,

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

A robust inter-connecting layer for achiev­­ing high-performance tandem polymer solar cells is fabricated and demonstrated in polymer tandem solar cells with a PCE of 7.0%. This layer is optically transparent, electrically conductive, and physically strong. It is revealed that, under light illumination, charges are collected and recombined in the interlayer; under dark conditions, charges are generated and extracted from it.

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