Chemical, Optical, Vibrational and Luminescent Properties of Hydrogenated Silicon-Rich Oxynitride Films

Sandeep Kohli, Jeremy A. Theil, Patricia C. Dippo, Richard K. Ahrenkiel, Christopher D. Rithner, Peter K. Dorhout

Research output: Contribution to journalArticlepeer-review

13 Scopus Citations

Abstract

X-ray photoelectron spectroscopy, spectroscopic ellipsometry, Fourier transform infrared and room temperature photoluminescence spectroscopy has been used to investigate the chemical, optical, vibrational and luminescent properties of Plasma Enhanced Chemical Vapor Deposited SiOxN y/H (0.17≤x≤0.96; 0.07≤y≤0.27), hydrogenated silicon-rich oxynitride (SRON). The linear dependence of the refractive index of the SRON films on the O/Si ratio was established. The photoluminescence from the SRON films were attributed to the embedded amorphous silicon clusters in the films. The dependence of luminescence maximum values on the O/Si and O/N ratios has been explored. We postulate that at O/Si ratio of 0.18 and an O/N ratio of 2.0 (SiO0.18N0.09) the film underwent a transformation from silicon-rich oxynitride to a-Si/H film with oxygen and nitrogen impurities.

Original languageAmerican English
Pages (from-to)89-97
Number of pages9
JournalThin Solid Films
Volume473
Issue number1
DOIs
StatePublished - 2005

NREL Publication Number

  • NREL/JA-520-37873

Keywords

  • Ellipsometry
  • Photoluminescence
  • Silicon-rich silicon oxynitride
  • Thin film
  • XPS

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