17 October 2013 Four-terminal organic solar cell modules with increased annual energy yield
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Abstract
The authors present experimental results on mechanically stacked organic solar modules and their advantage over standard tandem architectures. A four-terminal configuration of two single junction modules with complementary absorbing active layers uses the more efficient energy conversion of a tandem structure without the necessity of matching currents or voltages of electrically connected subcells. The presented combination of semitransparent and opaque solar cells consists of solution processed polymer-fullerene blends as active materials. A cost-effective mechanical scribing process is applied for the patterning of the deposited layers. The best devices have an efficiency of over 6.5% on an aperture area of 16 cm2 which equals a gain of 30% over the best single junction module fabricated by the same process. Optical simulations demonstrate a 32% increased annual energy output of a mechanically stacked device in comparison to a monolithic tandem structure using an equivalent geometry.
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Robert Gehlhaar, Robert Gehlhaar, David Cheyns, David Cheyns, Luuk Van Willigenburg, Luuk Van Willigenburg, Afshin Hadipour, Afshin Hadipour, Jan Gilot, Jan Gilot, Roshanak Radbeh, Roshanak Radbeh, Tom Aernouts, Tom Aernouts, } "Four-terminal organic solar cell modules with increased annual energy yield", Proc. SPIE 8830, Organic Photovoltaics XIV, 88300I (17 October 2013); doi: 10.1117/12.2024023; https://doi.org/10.1117/12.2024023
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