Effects of concentrated sunlight on organic photovoltaics

Thomas Tromholt, Eugene A. Katz, Baruch Hirsch, Alexis Vossier, Frederik C Krebs

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    Abstract

    We report the effects of concentrated sunlight on key photovoltaic parameters and stability of organic photovoltaics (OPV). Sunlight collected and concentrated outdoors was focused into an optical fiber and delivered onto a 1 cm2 bulk-heterojunction cell. Sunlight concentration C was varied gradually from 0.2 to 27 suns. Power conversion efficiency exhibited slow increase with C that was followed by saturation around 2% at C = 0.5–2.5 suns and subsequent strong reduction. Possible OPV applications in stationary solar concentrators (C ≤ 2 suns) are discussed. Finally, experiments at C = 55–58 suns demonstrated potential of our approach for accelerated studies of light induced mechanisms in the OPV degradation. © 2010 American Institute of Physics
    Original languageEnglish
    JournalApplied Physics Letters
    Volume96
    Issue number7
    Pages (from-to)073501
    ISSN0003-6951
    DOIs
    Publication statusPublished - 2010

    Bibliographical note

    Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

    Keywords

    • Polymer solar cells
    • Solar energy

    Cite this

    Tromholt, T., Katz, E. A., Hirsch, B., Vossier, A., & Krebs, F. C. (2010). Effects of concentrated sunlight on organic photovoltaics. Applied Physics Letters, 96(7), 073501. https://doi.org/10.1063/1.3298742