Effects of concentrated sunlight on organic photovoltaics

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

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    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
    Issue number7
    Pages (from-to)073501
    Publication statusPublished - 2010

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    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.


    • Polymer solar cells
    • Solar energy

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