Advanced Materials

Effects of Impurities on Operational Mechanism of Organic Bulk Heterojunction Solar Cells

Authors

  • Loren Kaake,

    1. Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
    2. Department of Physics, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
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  • Xuan-Dung Dang,

    1. Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
    2. Department of Chemistry & Biochemistry, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
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  • Wei Lin Leong,

    1. Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
    2. Department of Physics, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
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  • Yuan Zhang,

    1. Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
    2. Department of Chemistry & Biochemistry, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
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  • Alan Heeger,

    1. Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
    2. Department of Physics, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
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  • Thuc-Quyen Nguyen

    Corresponding author
    1. Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
    2. Department of Chemistry & Biochemistry, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA
    • Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA.
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Abstract

Photoconductive atomic force microscopy in conjunction with transient absorption spectroscopy and charge transport study were used to investigate the effect of impurities (TCNQ and PC84BM) on the performance of low band gap conjugated polymer and fullerene solar cells to gain insight into whether differing impurity shapes may lead to different loss mechanisms.

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