期刊
OPTICS EXPRESS
卷 26, 期 18, 页码 A750-A760出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.26.00A750
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- Bavarian Ministry for Economics, Media, Energy and Technology
Monolithic perovskite/c-Si tandem solar cells have the potential to exceed the Shockley-Queisser limit for single junction solar cells. However, reflection losses at internal interfaces play a crucial role for the overall efficiency of the tandem devices. Significant reflection losses are caused by the charge selective contacts which have a significantly lower refractive index compared to the absorber materials. Here, we present an approach to overcome a significant part of these reflection losses by introducing a multilayer stack between the top and bottom cell which shows spectrally selective transmission/reflection behavior. The layer stack is designed and optimized by optical simulations using transfer matrix method and a genetic algorithm. The incident sun light is split into a direct part and an isotropic diffuse part. The tandem solar cell with interlayer shows an absolute improvement of short-circuit current density of 0.82 mA/cm(2). (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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