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Long-Term Thermal Stability of High-Efficiency Polymer Solar Cells Based on Photocrosslinkable Donor-Acceptor Conjugated Polymers

Authors

  • Gianmarco Griffini,

    1. Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, CA 94720-1460, USA
    2. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
    3. Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
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  • Jessica D. Douglas,

    1. Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, CA 94720-1460, USA
    2. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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  • Claudia Piliego,

    1. Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, CA 94720-1460, USA
    2. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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  • Thomas W. Holcombe,

    1. Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, CA 94720-1460, USA
    2. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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  • Stefano Turri,

    1. Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
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  • Jean M. J. Fréchet,

    Corresponding author
    1. Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, CA 94720-1460, USA
    2. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
    • Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, CA 94720-1460, USA.
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  • Justin L. Mynar

    Corresponding author
    1. Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, CA 94720-1460, USA
    2. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
    • Departments of Chemistry and Chemical Engineering, University of California, Berkeley, Berkeley, CA 94720-1460, USA.
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Abstract

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Highly efficient polymer solar cells based on novel photocrosslinkable donor–acceptor conjugated polymers are fabricated and their long-term thermal stability is reported. After 72 h of thermal annealing at 150 °C, a stable power conversion efficiency as high as 4.7% is maintained. The control of active layer morphology and device performance through annealing is correlated with the synthetic design of the photocrosslinkable polymer.

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