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@ARTICLE{Yang:138285,
author = {Yang, Shu and Huang, Sen and Schnee, Michael and Zhao,
Qing-Tai and Schubert, Jürgen and Chen, Kevin J.},
title = {{F}abrication and {C}haracterization of
{E}nhancement-{M}ode {H}igh-kappa
{L}a{L}u{O}3-{A}l{G}a{N}/{G}a{N} {MIS}-{HEMT}s},
journal = {IEEE transactions on electron devices},
volume = {60},
number = {10},
issn = {1557-9646},
address = {New York, NY},
publisher = {IEEE},
reportid = {FZJ-2013-04442},
pages = {3040 - 3046},
year = {2013},
abstract = {In this paper, we investigate the enhancement-mode (E-mode)
${rm LaLuO}_{3}$ (LLO)-AlGaN/GaN
metal-insulator-semiconductor high-electron mobility
transistors (MIS-HEMTs) fabricated using fluorine (F) plasma
ion implantation with a gate-dielectric-first planar
process. The E-mode MIS-HEMTs exhibit a threshold voltage
$(V_{rm TH})$ of 0.6 V, a peak transconductance of ${sim}{rm
193}~{rm mS}/{rm mm}$, a small hysteresis of 0.04 V in
linear region characterized by a pulse-mode current-voltage
measurement, and significantly suppressed current collapse
under high-drain-bias switching conditions. X-ray
photoelectron spectroscopy and secondary ion mass
spectrometry analyses manifest that the negatively charged F
ions penetrating into the (Al)GaN barrier layer serve as the
primary $V_{rm TH}$ modulation mechanism, whereas the F ions
in the fluorinated LLO film form chemical bonds with La/Lu
atoms and become charge-neutral. The suppressed current
collapse is verified as an advantageous byproduct of the F
plasma ion implantation that also fluorinated the SiNx
sidewalls in the vicinity of the gate electrode, and
therefore, suppress electron injection to the gate-drain
access region.},
cin = {PGI-9 / JARA-FIT},
ddc = {620},
cid = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$},
pnm = {421 - Frontiers of charge based Electronics (POF2-421)},
pid = {G:(DE-HGF)POF2-421},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000324928900010},
doi = {10.1109/TED.2013.2277559},
url = {https://juser.fz-juelich.de/record/138285},
}