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Significantly Reduced Bimolecular Recombination in a Novel Silole-Based Polymer: Fullerene Blend

Authors

  • Tracey M. Clarke,

    Corresponding author
    1. ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, North Wollongong, NSW 2500, Australia
    • ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, North Wollongong, NSW 2500, Australia.
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  • Deanna B. Rodovsky,

    1. National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
    2. Konarka Technologies, 116 John St., Suite 12, Lowell, MA 01852, USA
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  • Andrew A. Herzing,

    1. National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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  • Jeff Peet,

    1. Konarka Technologies, 116 John St., Suite 12, Lowell, MA 01852, USA
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  • Gilles Dennler,

    1. Konarka Technologies, 116 John St., Suite 12, Lowell, MA 01852, USA
    2. IMRA Europe, 220, rue Albert Caquot - BP 213, 06904 Sophia-Antipolis Cedex, France
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  • Dean DeLongchamp,

    1. National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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  • Christoph Lungenschmied,

    1. Konarka Technologies, 116 John St., Suite 12, Lowell, MA 01852, USA
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  • Attila J. Mozer

    Corresponding author
    1. ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, North Wollongong, NSW 2500, Australia
    • ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, North Wollongong, NSW 2500, Australia.
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Abstract

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Charge transport measurements reveal non-Langevin recombination for KP115:PCBM organic photovoltaic devices. This rare but highly advantageous behaviour allows a long charge carrier drift length and thus devices with thick active layers retain a high fill factor. However, no clear correlation with morphology was found, indicating that the origin of non-Langevin recombination may be more complex than previously thought.

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