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@ARTICLE{Duan:890730,
author = {Duan, Weiyuan and Bittkau, Karsten and Lambertz, Andreas
and Qiu, Kaifu and Yao, Zhirong and Steuter, Paul and Qiu,
Depeng and Rau, Uwe and Ding, Kaining},
title = {{I}mproved {I}nfrared {L}ight {M}anagement with
{T}ransparent {C}onductive {O}xide/{A}morphous {S}ilicon
{B}ack {R}eflector in {H}igh‐{E}fficiency {S}ilicon
{H}eterojunction {S}olar {C}ells},
journal = {Solar RRL},
volume = {5},
number = {3},
issn = {2367-198X},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2021-01153},
pages = {2000576},
year = {2021},
abstract = {To improve the infrared (IR) response, a
high-refractive-index intrinsic amorphous silicon (a-Si:H)
layer is introduced after metallization of bifacial silicon
heterojunction (SHJ) solar cells, resulting in a transparent
conductive oxide (TCO)/a-Si:H back reflector, which
functions like distributed Bragg reflector (DBR). This
concept is demonstrated by both Sentaurus Technology
Computer-Aided Design (TCAD) simulation and experimental
methods. The TCO/a-Si:H back reflector can increase rear
internal reflectance by reducing the transmission loss, thus
improving the IR external quantum efficiency. The using of
Sn-doped In2O3 (ITO)/a-Si:H back reflector in $>23.5\%$
efficiency SHJ solar cells can improve short-circuit current
density by 0.4 mA cm2 which is quite similar as using the
more expensive ITO/Ag back reflector, while keeping a cell
bifaciality of $55\%.$ This brings its advantage for
monofacial application case. Future studies would be nice to
work on higher transparent back reflectors to broaden the
application in bifacial case. This back-reflector design
promotes IR response of SHJ solar cells with transferring to
a wide variety of TCOs.},
cin = {IEK-5},
ddc = {600},
cid = {I:(DE-Juel1)IEK-5-20101013},
pnm = {1213 - Cell Design and Development (POF4-121) /
Verbundvorhaben: Street - Einsatz von hocheffizienten
Solarzellen in elektrisch betriebenen Nutzfahrzeugen;
Teilvorhaben: Herstellung und Entwicklung von (0324275E)},
pid = {G:(DE-HGF)POF4-1213 / G:(BMWi)0324275E},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000616487200001},
doi = {10.1002/solr.202000576},
url = {https://juser.fz-juelich.de/record/890730},
}