Go to ...
Help
|
Logoff
Citation 27
Accession Number
005346304
Author
Cai YQ
.
Storer P
.
Kheifets
AS
.
McCarthy IE
.
Weigold E
.
Institution
Electron. Structure of Mater. Centre, Flinders Univ. of South Australia,
Adelaide, SA, Australia.
Title
Dangling-bond surface states on an amorphous germanium surface as observed by
(e,2e) spectroscopy.
Source
Elsevier. Surface Science, vol.357-358, 20 June 1996, pp.427-31.
Netherlands.
Country of Publication
Netherlands.
Conference Information
13th International Vacuum Congress and 9th International Conference on Solid
Surfaces. Yokohama, Japan. 25-29 Sept. 1995.
Abstract
We have studied the energy-resolved momentum density of evaporated amorphous germanium and the effect of hydrogen adsorption using a surface-sensitive solid state (e,2e) spectrometer with estimated energy and momentum resolutions of about 2.0 eV and 0.15 au, respectively. Experimental evidence has been obtained which suggests the existence of dangling-bond surface states spreading from around -2 to -10 eV within a momentum range of 0.55 to 0.95 au in the valence-band region. Hydrogen-induced features are found at energies from -7 to -13 eV between momenta of 0.15 and 0.85 au. (10 References).
Abstract Number
A9618-7320-071
Subject Headings
Adsorption
Amorphous semiconductors
Dangling bonds
Electron-surface impact
Elemental semiconductors
Germanium
Hydrogen
Surface states
Valence bands
Key Phrase Identifiers
a-Ge surface; dangling-bond surface states; (e,2e) spectroscopy; H
adsorption; energy resolution; momentum resolution; valence-bands; Ge; H.
Classification Codes
Surface impurity and defect levels; energy levels of adsorbed species
[A7320H]; Evaporation and condensation; interface adsorption and desorption
kinetics [A6845D]; Sorption and accommodation coefficients (surface
chemistry) [A8265M]; Electron-surface impact: secondary emission [A7920H].
Treatment
Experimental.
Chemicals
Ge/sur; Ge/el; H/ads; H/el.
CODEN
SUSCAS
Language
English.
ISSN
0039-6028.
U.S. Copyright Clearance Center Code
0039-6028/96/$15.00.
Document Number
S0039-6028(96)00193-8.
Publication Type
Conference Paper.
SICI
0039-6028(19960620)357/358L.427:DBSS;1-6
Update Code
199600.
Copyright
Copyright 1996, IEE.