Effects of concentrated sunlight on organic photovoltaics | Zendy

Thomas Tromholt | Zendy; Eugene A. Katz | Zendy; Baruch Hirsch | Zendy; Alexis Vossier | Zendy; Frederik C. Krebs | Zendy

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Effects of concentrated sunlight on organic photovoltaics

Author(s) -

Thomas Tromholt,

Eugene A. Katz,

Baruch Hirsch,

Alexis Vossier,

Frederik C. Krebs

Publication year - 2010

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3298742

Subject(s) - suns in alchemy , sunlight , organic solar cell , photovoltaics , materials science , solar energy , photovoltaic system , optoelectronics , optics , physics , polymer , composite material , biology , ecology

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.

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