%0 Journal Article
%A Wilken, Karen
%A Paetzold, Ulrich W.
%A Meier, Matthias
%A Smeets, Michael
%A Prager, Nicole
%A Fahland, Matthias
%A Finger, Friedhelm
%A Smirnov, Vladimir
%T Light Management in Flexible Thin-Film Solar Cells—The Role of Nanoimprinted Textures and Tilted Surfaces
%J IEEE journal of photovoltaics
%V 5
%N 6
%@ 2156-3381
%C New York, NY
%I IEEE
%M FZJ-2015-06895
%P 1646 - 1653
%D 2015
%X We present the application of ultraviolet (UV) nanoimprint lithography for the replication of advanced light management schemes in flexible thin-film solar cells. The approach is maintained entirely at low temperatures, which are required for the development of flexible solar cells on low-cost transparent polymer films. Light-scattering properties are significantly improved by this technique, and thin-film silicon solar cells prepared on these substrates show a substantial improvement in performance due to the nanoimprinted texture. We further investigate the effect of various incident angles of the light on the short-circuit current density (Jsc) of the solar cell and evaluate the corresponding performance of a flexible solar cell in a bent state. Our results show that in the case of imprinted texture, the Jsc and efficiency is reduced within 5% in a bent case of a semicircle when a reduction of the effective illumination area with angle is not taken into account. Overall, the solar cell on imprint-textured polyethylene terephthalate (PET) film shows an increased Jsc for the entire range of incident angles and bent states compared with the nonimprinted PET substrate.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000364098400021
%R 10.1109/JPHOTOV.2015.2470672
%U https://juser.fz-juelich.de/record/276456