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@ARTICLE{Kim:201190,
author = {Kim, Do Yun and Santbergen, Rudi and Jäger, Klaus and
Sever, Martin and Krč, Janez and Topič, Marko and Hänni,
Simon and Zhang, Chao and Heidt, Anna and Meier, Matthias
and van Swaaij, René A. C. M. M. and Zeman, Miro},
title = {{E}ffect of {S}ubstrate {M}orphology {S}lope
{D}istributions on {L}ight {S}cattering, nc-{S}i:{H} {F}ilm
{G}rowth, and {S}olar {C}ell {P}erformance},
journal = {ACS applied materials $\&$ interfaces},
volume = {6},
number = {24},
issn = {1944-8252},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2015-03495},
pages = {22061 - 22068},
year = {2014},
abstract = {Thin-film silicon solar cells are often deposited on
textured ZnO substrates. The solar-cell performance is
strongly correlated to the substrate morphology, as this
morphology determines light scattering, defective-region
formation, and crystalline growth of hydrogenated
nanocrystalline silicon (nc-Si:H). Our objective is to gain
deeper insight in these correlations using the slope
distribution, rms roughness (σrms) and correlation length
(lc) of textured substrates. A wide range of surface
morphologies was obtained by Ar plasma treatment and wet
etching of textured and flat-as-deposited ZnO substrates.
The σrms, lc and slope distribution were deduced from AFM
scans. Especially, the slope distribution of substrates was
represented in an efficient way that light scattering and
film growth direction can be more directly estimated at the
same time. We observed that besides a high σrms, a high
slope angle is beneficial to obtain high haze and scattering
of light at larger angles, resulting in higher short-circuit
current density of nc-Si:H solar cells. However, a high
slope angle can also promote the creation of defective
regions in nc-Si:H films grown on the substrate. It is also
found that the crystalline fraction of nc-Si:H solar cells
has a stronger correlation with the slope distributions than
with σrms of substrates. In this study, we successfully
correlate all these observations with the solar-cell
performance by using the slope distribution of substrates.},
cin = {IEK-5},
ddc = {540},
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:000347139400038},
doi = {10.1021/am5054114},
url = {https://juser.fz-juelich.de/record/201190},
}