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27 August 2009 Efficient and long-term stable organic vacuum deposited tandem solar cells
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We report on latest progress in the field of p-i-n type tandem solar cells. An optimized tandem cell architecture with two complementary absorbing bulk heterojunctions leads to a certified power conversion efficiency of 5.9% on 2 cm2 active area. Moreover, we show that p-i-n type tandem solar cells can be extremely stable: Extrapolated lifetimes corresponding to more than 30 years of sun illumination have been achieved. Furthermore, we show that efficiency and stability only slightly decrease when transferring the cell architecture to large serially interconnected modules of more than 100 cm² area.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Schwartz, B. Maennig, C. Uhrich, W. Gnehr, S. Sonntag, O. Erfurth, E. Wollrab, K. Walzer, and M. Pfeiffer "Efficient and long-term stable organic vacuum deposited tandem solar cells", Proc. SPIE 7416, Organic Photovoltaics X, 74160K (27 August 2009);

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