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@ARTICLE{Wilken:906934,
author = {Wilken, Karen and Güneş, Mehmet and Wang, Shuo and
Finger, Friedhelm and Smirnov, Vladimir},
title = {{U}nderstanding the {O}rigin of {T}hermal {A}nnealing
{E}ffects in {L}ow‐{T}emperature {A}morphous {S}ilicon
{F}ilms and {S}olar {C}ells},
journal = {Physica status solidi / A},
volume = {219},
number = {9},
issn = {0031-8965},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2022-01759},
pages = {2100451 -},
year = {2022},
abstract = {A detailed investigation of the effects of prolonged
postdeposition annealing on the performance of amorphous
silicon (a-Si:H) solar cells and the properties of
individual a-Si:H layers that are fabricated at low
temperature of 120 °C is presented. A substantial
improvement in all parameters of the current–voltage
curves of these solar cells is observed upon annealing,
consistent with an improvement in the collection voltage of
the solar cells. Modifications of p-type layers during
deposition of the solar cells are found to make no
significant contribution to the annealing behavior of solar
cells, while variations in the properties of n-type and
intrinsic layers contribute substantially. The results
indicate that the largest contribution to the annealing
effect originates from changes in the electron μτ-product
in the intrinsic absorber layer upon annealing, while
changes in hole μτ-products have a minor contribution to
the annealing effect in the solar cell. Besides a lack of
significant changes in the number of recombination centers
upon annealing, an improvement in the external quantum
efficiency curves upon annealing may be accurately
reproduced in computer simulations by assuming an increase
in the band mobilities of both electrons and holes.},
cin = {IEK-5},
ddc = {530},
cid = {I:(DE-Juel1)IEK-5-20101013},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000770361500001},
doi = {10.1002/pssa.202100451},
url = {https://juser.fz-juelich.de/record/906934},
}