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Etienne Moulin, Ulrich Wilhelm Paetzold, Karsten Bittkau, Jorj Owen, Joachim Kirchhoff, Andreas Bauer and Reinhard Carius Investigation of the impact of the rear-dielectric/silver back reflector design on the optical performance of thin-film silicon solar cells by means of detached reflectors Progress in Photovoltaics: Research and Applications 21

Version of Record online: 28 JAN 2013 | DOI: 10.1002/pip.2355

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The microcrystalline silicon (µc-Si:H) solar cell is equipped with a local electrical contact scheme that enables the use of non-conductive rear dielectrics, such as air or transparent liquids of various refractive indices n, combined with detached BRs with the desired surface topography. The quantum efficiency is improved by decreasing n and increasing roughness of the BR. Calculations of the angular intensity distribution of the scattered light in µc-Si:H allow us to establish a consistent picture of the light trapping.

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