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@BOOK{Urban:136230,
author = {Urban, Christoph Johannes},
title = {{DC} and {RF} characterization of {N}i{S}i {S}chottky
barrier {MOSFET}s with dopant segregation},
volume = {12},
school = {RWTH Aachen},
type = {Dr.},
address = {Forschungszentrum, Zentralbibliothek, Jülich},
reportid = {PreJuSER-136230},
isbn = {978-3-89336-644-6},
series = {Schriften des Forschungszentrums Jülich. Reihe Information
/ information},
pages = {IV, 151 S.},
year = {2010},
note = {Record converted from JUWEL: 18.07.2013; RWTH Aachen,
Diss., 2009},
abstract = {The continuous downscaling of the Si-based
microelectronics, which is the fundament of today’s
information technology, requires novel concepts for the
source/drain (S/D) architecture of metal-oxide-semiconductor
field-effect transistors (MOSFETs). The improvement of the
carrier injection is of prime importance because of the
increasing impact of parasitic resistances which strongly
limit the performance of ultimately scaled transistors.
Moreover, steeper junctions at the contact/channel
interfaces become more and more crucial for nanoscale
devices. In this context, Schottky-barrier (SB) MOSFETs with
metallic S/D are promising performance boosters since they
offer low extrinsic resistances and atomically abrupt
junctions formed at the metal/silicon interface. However, a
drawback of these devices is their performance which is
inferior to conventional MOSFETs due to the relatively high
Schottky barrier. Recently, dopant segregation has attracted
much interest since the highly doped layer formed at the
silicide/silicon interface during silicidation strongly
improves the tunneling probability of carriers through
Schottky contacts. The present thesis studies the
integration of NiSi with dopant segregation in SBMOSFETs on
thin-body silicon-on-insulator experimentally. The objective
of the detailed direct-current (DC) and radio-frequency (RF)
characterization is to gain a better insight into the
physics of these devices. The modeling of NiSi/p-Si Schottky
contacts using a numerical model which combines the
thermionic emission theory with image-force induced barrier
lowering and quantum-mechanical tunneling provides a solid
understanding of the carrier injection of Schottky contacts.
The characterization of Schottky diodes with silicidation
induced dopant segregation using boron, arsenic and antimony
reveals effective Schottky barrier heights in the 0.1 eV
regime depending on the implantation dose. Below this value
SB-MOSFETs are capable of outperforming conventional
MOSFETs. Successfully fabricated long- and short-channel p-
and n-type SB-MOSFETs with and without dopant segregation
are characterized performing direct-current (DC)
measurements. Transistors with 80 nm channel length reveal
on-currents as high as 427 μA/μm for p-type and 1150
μA/μm for n-type devices, respectively, which compete well
with state-of-the-art SB-MOSFETs. [...]},
cin = {IBN-1},
ddc = {500},
cid = {I:(DE-Juel1)VDB799},
shelfmark = {FJK - Specific semiconductor materials / FJL - Physics of
solid state devices / FJCK - Electrical conduction in solid
materials / FJH - Semiconductor physics / FJK -
Halbleitermaterialien / FZJ - Schriftenreihen des
Forschungszentrums Jülich},
typ = {PUB:(DE-HGF)3},
url = {https://juser.fz-juelich.de/record/136230},
}