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@ARTICLE{Wirths:189055,
author = {Wirths, Stephan and Stange, Daniela and Pampillon, Maria
and Tiedemann, Andreas and Mussler, Gregor and Fox, Alfred
and Breuer, Uwe and Baert, Bruno and San Andrés, Enrique
and Nguyen, Ngoc D. and Hartmann, Jean-Michel and Ikonic,
Zoran and Mantl, Siegfried and Buca, Dan Mihai},
title = {{H}igh- k {G}ate {S}tacks on {L}ow {B}andgap {T}ensile
{S}trained {G}e and {G}e{S}n {A}lloys for {F}ield-{E}ffect
{T}ransistors},
journal = {ACS applied materials $\&$ interfaces},
volume = {7},
number = {1},
issn = {1944-8252},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2015-02297},
pages = {62 - 67},
year = {2015},
abstract = {We present the epitaxial growth of Ge and Ge0.94Sn0.06
layers with $1.4\%$ and $0.4\%$ tensile strain,
respectively, by reduced pressure chemical vapor deposition
on relaxed GeSn buffers and the formation of high-k/metal
gate stacks thereon. Annealing experiments reveal that
process temperatures are limited to 350 °C to avoid Sn
diffusion. Particular emphasis is placed on the electrical
characterization of various high-k dielectrics, as 5 nm
Al2O3, 5 nm HfO2, or 1 nmAl2O3/4 nm HfO2, on strained Ge and
strained Ge0.94Sn0.06. Experimental capacitance–voltage
characteristics are presented and the effect of the small
bandgap, like strong response of minority carriers at
applied field, are discussed via simulations.},
cin = {PGI-9 / JARA-FIT / ZEA-3},
ddc = {540},
cid = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$ /
I:(DE-Juel1)ZEA-3-20090406},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000348085200008},
pubmed = {pmid:25531887},
doi = {10.1021/am5075248},
url = {https://juser.fz-juelich.de/record/189055},
}