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

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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.

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Authors and Affiliations

  1. NIBEC, School of Electrical and Mechanical Engineering, University of Ulster at Jordanstown, Newtownabbey, Co. Antrim BT37 OQB, Greece

    S.S. Roy, P. Papakonstantinou, R. McCann & J. McLaughlin

  2. FORTH, IESL, P.O. Box 1527, Gr711 10, Crete, Greece

    A. Klini & N. Papadogiannis

Authors
  1. S.S. Roy
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  2. P. Papakonstantinou
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  3. R. McCann
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  4. J. McLaughlin
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  5. A. Klini
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  6. N. Papadogiannis
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Correspondence to P. Papakonstantinou.

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PACS

81.05.Uw; 81.15.Fg; 82.80

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Roy, S., Papakonstantinou, P., McCann, R. et al. Bonding configurations in amorphous carbon and nitrogenated carbon films synthesised by femtosecond laser deposition. Appl. Phys. A 79, 1009–1014 (2004). https://doi.org/10.1007/s00339-004-2616-z

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  • DOI: https://doi.org/10.1007/s00339-004-2616-z

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