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@ARTICLE{SchulteBraucks:830329,
author = {Schulte-Braucks, Christian and Hofmann, Emily and Glass,
Stefan and von den Driesch, Nils and Mussler, Gregor and
Breuer, Uwe and Hartmann, Jean-Michel and Zaumseil, Peter
and Schröder, Thomas and Zhao, Qing-Tai and Mantl,
Siegfried and Buca, Dan},
title = {{S}chottky barrier tuning via dopant segregation in
{N}i{G}e{S}n-{G}e{S}n contacts},
journal = {Journal of applied physics},
volume = {121},
number = {20},
issn = {1089-7550},
address = {Melville, NY},
publisher = {American Inst. of Physics},
reportid = {FZJ-2017-03896},
pages = {205705 -},
year = {2017},
abstract = {We present a comprehensive study on the formation and
tuning of the Schottky barrier of NiGeSn metallic alloys on
Ge1-xSnx semiconductors. First, the Ni metallization of GeSn
is investigated for a wide range of Sn contents
(x = 0–0.125). Structural analysis reveals the
existence of different poly-crystalline NiGeSn and
Ni3(GeSn)5 phases depending on the Sn content. Electrical
measurements confirm a low NiGeSn sheet resistance of 12
Ω/□ almost independent of the Sn content. We extracted
from Schottky barrier height measurements in
NiGeSn/GeSn/NiGeSn metal-semiconductor-metal diodes Schottky
barriers for the holes below 0.15 eV. They decrease with
the Sn content, thereby confirming NiGeSn as an ideal metal
alloy for p-type contacts. Dopant segregation for both p-
and n-type dopants is investigated as a technique to
effectively modify the Schottky barrier of NiGeSn/GeSn
contacts. Secondary ion mass spectroscopy is employed to
analyze dopant segregation and reveal its dependence on both
the Sn content and biaxial layer strain.},
cin = {PGI-9 / ZEA-3},
ddc = {530},
cid = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)ZEA-3-20090406},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521) / E2SWITCH - Energy Efficient Tunnel FET Switches
and Circuits (619509)},
pid = {G:(DE-HGF)POF3-521 / G:(EU-Grant)619509},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000404164200029},
doi = {10.1063/1.4984117},
url = {https://juser.fz-juelich.de/record/830329},
}