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Efficiency Enhancement of Organic Solar Cells by Fabricating Periodic Surface Textures using Direct Laser Interference Patterning

Authors

  • Lars Müller-Meskamp,

    Corresponding author
    1. Dresdner Innovationszentrum Energieeffizienz and Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr Straße 1, 01069 Dresden, Germany
    • Dresdner Innovationszentrum Energieeffizienz and Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr Straße 1, 01069 Dresden, Germany
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  • Yong Hyun Kim,

    1. Dresdner Innovationszentrum Energieeffizienz and Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr Straße 1, 01069 Dresden, Germany
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  • Teja Roch,

    1. Institute for Surface and Manufacturing Technology, Technische Universität Dresden, George-Bähr-Str. 3c, 01062 Dresden, Germany
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  • Simone Hofmann,

    1. Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr Straße 1, 01069 Dresden, Germany
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  • Reinhard Scholz,

    1. Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr Straße 1, 01069 Dresden, Germany
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  • Sebastian Eckardt,

    1. Fraunhofer Institute for Material and Beam Technology, Winterbergstr. 28, 01277 Dresden, Germany
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  • Karl Leo,

    1. Dresdner Innovationszentrum Energieeffizienz and Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr Straße 1, 01069 Dresden, Germany
    2. Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr Straße 1, 01069 Dresden, Germany
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  • Andrés Fabián Lasagni

    Corresponding author
    1. Fraunhofer Institute for Material and Beam Technology, Winterbergstr. 28, 01277 Dresden, Germany
    • Fraunhofer Institute for Material and Beam Technology, Winterbergstr. 28, 01277 Dresden, Germany.
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Abstract

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Direct laser interference patterning (DLIP) is used to fabricate large area, two-dimensional periodic surface patterns on polyethylene terephthalate (PET) substrates to enhance the performance of ZnPc:C60 solar cells by light concentration in the absorber layer. Comparing the power conversion efficiencies to the reference cell on flat PET, a relative increase of 21% is observed for the hexagonal pattern with 0.7 μm period, depicted in the figure.

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