Scientific Reports (Nov 2018)

Valence band behaviour of zirconium oxide, Photoelectron and Auger spectroscopy study

  • Zakaria Azdad,
  • Laurent Marot,
  • Lucas Moser,
  • Roland Steiner,
  • Ernst Meyer

DOI
https://doi.org/10.1038/s41598-018-34570-w
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 6

Abstract

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Abstract In this study X-ray Photoelectron Spectroscopy and Ultraviolet Photoelectron Spectroscopy were combined to investigate the effect of oxygen incorporation on the valence band behaviour of ZrO x . The Auger transitions involving valence bands are found to mimic the self-folded density of state measured using Ultraviolet Photoelectron Spectroscopy. The valence band once constructed in a sub-oxide form, stays at a fixed energy position despite the change in the stoichiometry. This behaviour is found to be useful in setting a reference for X-ray Photoelectron Spectroscopy charge correction. The results of the charged corrected spectra were compared to other methods and found to be in great agreement. Finally, a correlation between the core-level binding energy and the structural property of ZrO x is given.

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