期刊
THIN SOLID FILMS
卷 518, 期 11, 页码 3054-3058出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2009.09.164
关键词
Thin-film silicon solar cell; Double textured TCO; Optical modelling
Potential improvements in the performance of tandem amorphous silicon/microcrystalline silicon (a-Si H/mu c-Si H) solar cells, related to the TCO superstrates with enhanced scattering properties are studied. In particular, optical effects of a high haze double textured (W-textured) SnO2 F TCO superstrate are analyzed and compared to the properties of the pyramidal type SnO2 F TCO superstrate. Solar cell with W-textured superstrate exhibits higher long-wavelength external quantum efficiency of the bottom mu c-Si H cell than the one with pyramidal type TCO superstrate. Optical simulations are employed to study the potential improvements of the solar cell performance if ideal haze parameter (H = 1) and/or a broad angular distribution function (Lambertian) of scattered light are applied to textured interfaces in the solar cell structure Simulations reveal significant improvements in long-wavelength quantum efficiencies if a broad angular distribution function of scattered light is applied Optical losses in the cells with enhanced scattering properties are analysed and evaluated in terms of short-circuit current losses in the supporting layers and losses due to reflected light (C) 2009 Elsevier B.V All rights reserved
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