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@ARTICLE{Liu:874666,
author = {Liu, Mingshan and Scholz, Stefan and Hardtdegen, Alexander
and Bae, Jin Hee and Hartmann, Jean-Michel and Knoch,
Joachim and Grutzmacher, Detlev and Buca, Dan and Zhao,
Qing-Tai},
title = {{V}ertical {G}e {G}ate-{A}ll-{A}round {N}anowire p{MOSFET}s
{W}ith a {D}iameter {D}own to 20 nm},
journal = {IEEE electron device letters},
volume = {41},
number = {4},
issn = {1558-0563},
address = {New York, NY},
publisher = {IEEE},
reportid = {FZJ-2020-01582},
pages = {533 - 536},
year = {2020},
abstract = {In this work, we demonstrate vertical Ge gate-all-around
(GAA) nanowire pMOSFETs fabricated with a CMOS compatible
top-down approach. Vertical Ge nanowires with diameters down
to 20 nm and an aspect ratio of ~11 were achieved by
optimized Cl 2 -based dry etching and self-limiting digital
etching. Employing a GAA architecture, post-oxidation
passivation and NiGe contacts, high performance Ge nanowire
pMOSFETs exhibit low SS of 66 mV/dec, small DIBL of 35 mV/V
and a high $\text {I}_{ \mathrm{\scriptscriptstyle
ON}}/\text{I}_{ \mathrm{\scriptscriptstyle OFF}}$ ratio of
${2.1}\times {10}^{{6}}$ . The electrical behavior was also
studied with temperature-dependent measurements. The
deviation between the experimental SS and the ideal kT/q
$\cdot $ ln10 values stems from the density of interface
traps $(\text {D}_{\text {it}})$ . Our measurements suggest
that lowering the top contact resistance is a key to further
performance improvement of vertical Ge GAA nanowire
transistors.},
cin = {PGI-9 / JARA-FIT / PGI-7},
ddc = {620},
cid = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)VDB881 /
I:(DE-Juel1)PGI-7-20110106},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000522206300002},
doi = {10.1109/LED.2020.2971034},
url = {https://juser.fz-juelich.de/record/874666},
}