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@ARTICLE{Paetzold:153253,
author = {Paetzold, U. W. and Smeets, M. and Meier, Matthias and
Bittkau, K. and Merdzhanova, T. and Smirnov, V. and
Michaelis, D. and Waechter, C. and Carius, R. and Rau, U.},
title = {{D}isorder improves nanophotonic light trapping in
thin-film solar cells},
journal = {Applied physics letters},
volume = {104},
number = {13},
issn = {1077-3118},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {FZJ-2014-02903},
pages = {131102},
year = {2014},
abstract = {We present a systematic experimental study on the impact of
disorder in advanced nanophotonic light-trapping concepts of
thin-film solar cells. Thin-film solar cells made of
hydrogenated amorphous silicon were prepared on
imprint-textured glass superstrates. For periodically
textured superstrates of periods below 500 nm, the
nanophotonic light-trapping effect is already superior to
state-of-the-art randomly textured front contacts. The
nanophotonic light-trapping effect can be associated to
light coupling to leaky waveguide modes causing resonances
in the external quantum efficiency of only a few nanometer
widths for wavelengths longer than 500 nm. With increasing
disorder of the nanotextured front contact, these resonances
broaden and their relative altitude decreases. Moreover,
overall the external quantum efficiency, i.e., the
light-trapping effect, increases incrementally with
increasing disorder. Thereby, our study is a systematic
experimental proof that disorder is conceptually an
advantage for nanophotonic light-trapping concepts employing
grating couplers in thin-film solar cells. The result is
relevant for the large field of research on nanophotonic
light trapping in thin-film solar cells which currently
investigates and prototypes a number of new concepts
including disordered periodic and quasi periodic textures.},
cin = {IEK-5},
ddc = {530},
cid = {I:(DE-Juel1)IEK-5-20101013},
pnm = {111 - Thin Film Photovoltaics (POF2-111) / HITEC -
Helmholtz Interdisciplinary Doctoral Training in Energy and
Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF2-111 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000334408500002},
doi = {10.1063/1.4869289},
url = {https://juser.fz-juelich.de/record/153253},
}