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Advanced Materials

Interlayer for Modified Cathode in Highly Efficient Inverted ITO-Free Organic Solar Cells

Authors

  • Zheng Tang,

    Corresponding author
    1. Biomolecular and Organic Electronics IFM, and Center of Organic Electronics, Linköping University, SE-581 83 Linköping, Sweden
    • Biomolecular and Organic Electronics IFM, and Center of Organic Electronics, Linköping University, SE-581 83 Linköping, Sweden.

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  • L. Mattias Andersson,

    1. Biomolecular and Organic Electronics IFM, and Center of Organic Electronics, Linköping University, SE-581 83 Linköping, Sweden
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  • Zandra George,

    1. Polymer Technology, Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
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  • Koen Vandewal,

    1. Biomolecular and Organic Electronics IFM, and Center of Organic Electronics, Linköping University, SE-581 83 Linköping, Sweden
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  • Kristofer Tvingstedt,

    1. Biomolecular and Organic Electronics IFM, and Center of Organic Electronics, Linköping University, SE-581 83 Linköping, Sweden
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  • Patrik Heriksson,

    1. Polymer Technology, Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
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  • Renee Kroon,

    1. Polymer Technology, Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
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  • Mats R. Andersson,

    1. Polymer Technology, Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
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  • Olle Inganäs

    Corresponding author
    1. Biomolecular and Organic Electronics IFM, and Center of Organic Electronics, Linköping University, SE-581 83 Linköping, Sweden
    • Biomolecular and Organic Electronics IFM, and Center of Organic Electronics, Linköping University, SE-581 83 Linköping, Sweden.

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Abstract

Inverted polymer solar cells with a bottom metal cathode modified by a conjugated polymer interlayer show considerable improvement of photocurrent and fill factor, which is due to hole blocking at the interlayer, and a modified surface energy which affects the nanostructure in the TQ1/[70]PCBM blend.

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