Advanced Materials

Bulk Heterojunction Solar Cells: A Mechanistic Understanding of Processing Additive-Induced Efficiency Enhancement in Bulk Heterojunction Organic Solar Cells (Adv. Mater. 2/2014)

Authors

  • Kristin Schmidt,

    1. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
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  • Christopher J. Tassone,

    1. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
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  • Jeremy R. Niskala,

    1. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA
    2. Department of Chemistry, University of California, Berkeley, CA, USA
    3. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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  • Alan T. Yiu,

    1. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA
    2. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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  • Olivia P. Lee,

    1. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA
    2. Department of Chemistry, University of California, Berkeley, CA, USA
    3. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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  • Thomas M. Weiss,

    1. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
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  • Cheng Wang,

    1. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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  • Jean M. J. Fréchet,

    1. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA
    2. Department of Chemistry, University of California, Berkeley, CA, USA
    3. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
    4. King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
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  • Pierre M. Beaujuge,

    1. King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
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  • Michael F. Toney

    Corresponding author
    1. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
    • Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park CA 94025 USA

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Abstract

The introduction of processing additives is widely used to increase power conversion efficiencies in organic solar cells. Michael F. Toney, Jeremy R. Niskala and co-workers show on page 300 how additives change the polymer conformation in the casting solution leading to a more-intermixed phase-segregated network structure of the organic solar-cell active layer. This results in a five-fold enhancement in efficiency.

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