Auger-photoelectron coincidence spectroscopy of SiO2

G. A. van Riessen*, S. M. Thurgate, D. E. Ramaker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The O K-LL spectrum from a SiO2 surface was measured in coincidence with O 1s photoemission in SiO2. The coincidence lineshapes are compared to the simultaneously obtained conventional Auger lineshapes and to model lineshapes. The low-energy tail of the O K-LL lineshape from SiO2 is suppressed in the APECS spectrum due to discrimination against extrinsic loss and initial-state shake processes, but remaining intensity indicated significant contribution from final-state shake-up/off processes. The results also confirm that a low energy satellite to the O K-L2,3L2,3 Auger line that is eliminated in the coincidence spectrum, and a high-energy shoulder that is enhanced in the coincidence spectrum, arise from an initial-state shake process, and final-state correlation effects, respectively. The results demonstrate the viability of applying APECS to the study of other metal oxides via the anion.

Original languageEnglish
Pages (from-to)150-159
Number of pages10
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume161
Issue number1-3 SPEC. ISS.
DOIs
Publication statusPublished - Oct 2007

Keywords

  • APECS
  • Auger-photoelectron coincidence spectroscopy
  • O K-LL
  • SiO

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