Abstract
Acetylene and oxygen adsorption on disordered and ordered silicon crystal surfaces of (111) orientation were studied by low-energy electron loss spectroscopy (ELS). There are marked structure-dependent differences in the ELS spectra in the presence of these adsorbates. A model for the acetylene molecule orientation on the silicon (111) ordered surface is proposed to explain the experimental results. ELS data suggest that the electrons in the silicon-oxygen chemisorption bond are more tightly bound on the disordered than on the silicon (111) surface with a (7 X 7) surface structure.
Original language | English (US) |
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Pages (from-to) | 341-348 |
Number of pages | 8 |
Journal | Surface Science |
Volume | 58 |
Issue number | 2 |
DOIs | |
State | Published - 1976 |
Funding
This work was per:'olmedu nderthe ausp:ceso f the U.S. Energy Researcha nd DevelopmenAtd m"nisr, ation.We are gratefutl o L. Kesmodeflo r many s~imulating discussionsT.h e ab)e a~,sistancoef T. Kaminsk.is gratefullya cknowledged.
ASJC Scopus subject areas
- Condensed Matter Physics
- Materials Chemistry
- Surfaces, Coatings and Films
- Surfaces and Interfaces