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@ARTICLE{Hiller:859772,
author = {Hiller, Daniel and Jordan, Paul M. and Ding, Kaining and
Pomaska, Manuel and Mikolajick, Thomas and König, Dirk},
title = {{D}eactivation of silicon surface states by {A}l-induced
acceptor states from {A}l–{O} monolayers in {S}i{O} 2},
journal = {Journal of applied physics},
volume = {125},
number = {1},
issn = {1089-7550},
address = {Melville, NY},
publisher = {American Inst. of Physics},
reportid = {FZJ-2019-00603},
pages = {015301 -},
year = {2019},
abstract = {Al–O monolayers embedded in ultrathin SiO2 were shown
previously to contain Al-induced acceptor states, which
capture electrons from adjacent silicon wafers and generate
a negative fixed charge that enables efficient Si-surface
passivation. Here, we show that this surface passivation is
just in part attributed to field-effect passivation, since
the electrically active interface trap density Dit itself at
the Si/SiO2 interface is reduced by the presence of the
acceptor states. For sufficiently thin tunnel-SiO2 films
between the Si-surface and the Al–O monolayers, Dit is
reduced by more than one order of magnitude. This is
attributed to an interface defect deactivation mechanism
that involves the discharge of the singly-occupied dangling
bonds (Pb0 defects) into the acceptor states, so that
Shockley-Read-Hall-recombination is drastically reduced. We
demonstrate that the combined electronic and field-effect
passivation allows for minority carrier lifetimes in excess
of 1 ms on n-type Si and that additional H2-passivation is
not able to improve that lifetime significantly.I.
INTRODUCTION},
cin = {IEK-5},
ddc = {530},
cid = {I:(DE-Juel1)IEK-5-20101013},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000455350200020},
doi = {10.1063/1.5054703},
url = {https://juser.fz-juelich.de/record/859772},
}