Outdiffusion And Subsequent Desorption Of Volatile Sio Molecules During Annealing Of Thick Si02 Films In Vacuum

Yuji Takakuwa, Mizuhisa Nihei, Nobuo Miyamoto

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The depth profile of so-called suboxides in the surface region for 1000-A-thick SiC>2 films annealed in vacuum at 800 °C was measured by angle-resolved X-ray photoelectron spectroscopy. It was found that the amount of suboxide distributed under the surface increases rapidly and almost saturates with annealing time, while the change in the amount of suboxide present on the surface is very small and increases gradually with annealing time. This indicates that very fast outdiffusion of SiO molecules through thick Si02 films takes place at as low as 800°C, leading to desorption from the Si02 surface.

Original languageEnglish
Pages (from-to)L480-L483
JournalJapanese journal of applied physics
Volume32
Issue number4 A
DOIs
Publication statusPublished - 1993 Apr

Keywords

  • Angle-resolved XPS
  • Desorption
  • Diffusion
  • Si02
  • Suboxide
  • Volatile SiO

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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