Applied Physics A

, Volume 79, Issue 4, pp 1009–1014

Bonding configurations in amorphous carbon and nitrogenated carbon films synthesised by femtosecond laser deposition

  • S.S. Roy
  • P. Papakonstantinou
  • R. McCann
  • J. McLaughlin
  • A. Klini
  • N. Papadogiannis
Article

DOI: 10.1007/s00339-004-2616-z

Cite this article as:
Roy, S., Papakonstantinou, P., McCann, R. et al. Appl. Phys. A (2004) 79: 1009. doi:10.1007/s00339-004-2616-z

Abstract

The effect of nitrogen addition and laser fluence on the atomic structure of amorphous carbon films (a-C) synthesized by femtosecond pulsed laser deposition has been studied. The chemical bonding in the films was investigated by means of X-ray photoelectron (XPS) and Raman spectroscopies. XPS studies revealed a decrease in the sp3 bonded carbon sites and an associated increase in the N-sp2C bonding sites with increasing nitrogen content in the CNx films. An increase in laser fluence from 0.36 to 1.7 J/cm2 led to a rise in sp3C sites. These results were further confirmed by Raman spectroscopy. The ID/IG ratio increased monotonically and G line-width decreased with the increase of nitrogen content in the films indicating a rise in either the number or the size of the sp2 clusters. Furthermore a visible excitation wavelength dependence study established the resonant Raman process in a-C and CNx films.

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • S.S. Roy
    • 1
  • P. Papakonstantinou
    • 1
  • R. McCann
    • 1
  • J. McLaughlin
    • 1
  • A. Klini
    • 2
  • N. Papadogiannis
    • 2
  1. 1.NIBEC, School of Electrical and Mechanical EngineeringUniversity of Ulster at JordanstownNewtownabbeyGreece
  2. 2.FORTHIESLCreteGreece