Optical and structural characterization of nc-Si/a-SiO2 superlattices

  • G. Grom
  • , L. Tsybeskov
  • , K. D. Hirschman
  • , P. M. Fauchet
  • , M. Zacharias
  • , T. N. Blanton
  • , J. P. McCaffrey
  • , J. M. Baribeau
  • , G. I. Sproule
  • , H. J. Labbe
  • , D. J. Lockwood

Research output: Contribution to journalConference articlepeer-review

Abstract

Nanocrystalline (nc)-Si/amorphous (a)-SiO2 superlattices (SLs) have been studied by transmission electron microscopy (TEM), Auger elemental microanalysis (TEM), Raman spectroscopy and optical reflection spectroscopy. Recrystallized Si/SiO2 SL is extremely stable under high temperature annealing (up to 1100 °C) and aggressive wet thermal oxidation: AEM and Raman spectroscopy of folded acoustic phonons (FAP) show no changes in periodicity in the growth direction and the abruptness of the nc-Si/a-SiO2 interfaces. Furthermore, Raman spectroscopy in the optical phonon range indicates that the annealing decreases the defect density in the Si nanocrystals (NCs), possibly due to Si-Si bond rearrangement accompanied by surface reconstruction and surface defect passivation by oxygen.

Original languageEnglish (US)
Pages (from-to)671-676
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3491
DOIs
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 International Conference on Applications of Photonic Technology, ICAPT - Ottawa, Can
Duration: Jul 29 1998Jul 31 1998

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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