Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/4114
Title: H2S exposure of a (100)Ge surface: Evidences for a (2x1) electrically passivated surface
Authors: Houssa, M.
NELIS, Daniel 
Hellin, D.
Pourtois, G.
Conard, T.
Paredis, K.
Vanormelingen, K.
Vantomme, A.
VAN BAEL, Marlies 
MULLENS, Jules 
Caymax, M.
Meuris, M.
Heyns, M. M.
Issue Date: 2007
Publisher: AMER INST PHYSICS
Source: APPLIED PHYSICS LETTERS, 90(22). p. 2105-...
Abstract: The experimental study of the bonding geometry of a (100)Ge surface exposed to H2S in the gas phase at 330 degrees C shows that 1 ML S coverage with (2x1) surface reconstruction can be achieved. The amount of S on the Ge surface and the observed surface periodicity can be explained by the formation of disulfide bridges between Ge-Ge dimers on the surface. First-principles molecular dynamics simulations confirm the preserved (2x1) reconstruction after dissociative adsorption of H2S molecules on a (100)Ge (2x1) surface, and predict the formation of (S-H)-(S-H) inter-Ge dimer bridges, i.e., disulfide bridges interacting via hydrogen bonding. The computed energy band gap of this atomic configuration is shown to be free of surface states, a very important finding for the potential application of Ge in future high performance integrated circuits. (C) 2007 American Institute of Physics.
Notes: IMEC, B-3001 Louvain, Belgium. Katholieke Univ Leuven, Inst Kern & Stralingsfys, B-3001 Louvain, Belgium. Katholieke Univ Leuven, Inst Nanoscale Phys & Chem, B-3001 Louvain, Belgium. Univ Hasselt, Mat Res Inst, Lab Inorgan & Phys Chem, B-3590 Diepenbeek, Belgium.Houssa, M, IMEC, Kapeldreef 75, B-3001 Louvain, Belgium.houssa@imec.be
Document URI: http://hdl.handle.net/1942/4114
ISSN: 0003-6951
e-ISSN: 1077-3118
DOI: 10.1063/1.2743385
ISI #: 000246909900037
Category: A1
Type: Journal Contribution
Validations: ecoom 2008
Appears in Collections:Research publications

Show full item record

SCOPUSTM   
Citations

37
checked on Sep 3, 2020

WEB OF SCIENCETM
Citations

32
checked on May 14, 2022

Page view(s)

54
checked on May 19, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.