Studies of acetylene and oxygen adsorption on silicon surfaces by low energy electron loss spectroscopy

Yip Wah Chung*, Wigbert Siekhaus, G. A. Somorjai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

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 languageEnglish (US)
Pages (from-to)341-348
Number of pages8
JournalSurface Science
Volume58
Issue number2
DOIs
StatePublished - Jan 1 1976

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

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