Effects of concentrated sunlight on organic photovoltaics

被引:63
作者
Tromholt, Thomas [2 ]
Katz, Eugene A. [1 ,3 ]
Hirsch, Baruch [1 ]
Vossier, Alexis [1 ]
Krebs, Frederik C. [2 ]
机构
[1] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Dept Solar Energy & Environm Phys, IL-84990 Midreshet Sede Boker, Israel
[2] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark
[3] Ben Gurion Univ Negev, Ilse Katz Inst Nanoscale Sci & Technol, IL-84105 Beer Sheva, Israel
关键词
optical fibres; power conversion; solar cells; solar radiation; sunlight; PLASTIC SOLAR-CELLS; LIFETIME;
D O I
10.1063/1.3298742
中图分类号
O59 [应用物理学];
学科分类号
摘要
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 cm(2) 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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页数:3
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