TY  - JOUR
AU  - Wilken, Karen
AU  - Paetzold, Ulrich W.
AU  - Meier, Matthias
AU  - Smeets, Michael
AU  - Prager, Nicole
AU  - Fahland, Matthias
AU  - Finger, Friedhelm
AU  - Smirnov, Vladimir
TI  - Light Management in Flexible Thin-Film Solar Cells—The Role of Nanoimprinted Textures and Tilted Surfaces
JO  - IEEE journal of photovoltaics
VL  - 5
IS  - 6
SN  - 2156-3381
CY  - New York, NY
PB  - IEEE
M1  - FZJ-2015-06895
SP  - 1646 - 1653
PY  - 2015
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000364098400021
DO  - DOI:10.1109/JPHOTOV.2015.2470672
UR  - https://juser.fz-juelich.de/record/276456
ER  -