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Investigation on optical and microstructural properties of photoluminescent LPCVD SiOxNy thin films

  • M. Modreanu
  • , Mariuca Gartner
  • , N. Tomozeiu
  • , J. Seekamp
  • , P. Cosmin

Research output: Contribution to journalArticlepeer-review

Abstract

Amorphous silicon oxynitride (a-SiOxNy) films of various compositions were deposited by low-pressure chemical vapour deposition (LPCVD) at 860°C and 400 mTorr, using a mixture of SiCl2H2-NH3-N2O. The dependence of the film properties on the deposition temperature and the gas flow ratio was studied by spectroellipsometry (SE) and infrared spectroscopy (IR). To calculate the optical and microstructural parameters of the films from SE data, three different approaches (Bruggeman-EMA, Cauchy and Sellmeier) were used. The comparison of the results shows a good agreement between all three models. Photoluminescence (PL) phenomena in as-deposited LPCVD silicon oxynitride are presented and compared to results reported in literature.

Original languageEnglish
Pages (from-to)145-148
Number of pages4
JournalOptical Materials
Volume17
Issue number1-2
DOIs
Publication statusPublished - Jun 2001
Externally publishedYes
EventOptoelectronics I: Materials and Technologies for Optoelectronic Devices - Strasbourg, France
Duration: 30 May 20002 Jun 2000

Keywords

  • Ellipsometry
  • IR absorption
  • LPCVD
  • Oxynitride
  • Photoluminescence
  • Thin films

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