Effects of concentrated sunlight on organic photovoltaics

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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
Volume96
Issue number7
Pages (from-to)073501
ISSN0003-6951
DOIs
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.

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    Research areas

  • Polymer solar cells, Solar energy

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