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

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Roy, SS, Papakonstantinou, P, McCann, R, McLaughlin, JAD, Klini, A and Papadogiannis, N (2004) Bonding configurations in amorphous carbon and nitrogenated carbon films synthesised by femtosecond laser deposition. Applied Physics A, 79 (4-6). pp. 1009-1014. [Journal article]

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URL: http://dx.doi.org/10.1007/s00339-004-2616-z

DOI: 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 Springer 2004

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:1499
Deposited By:Mrs Ann Blair
Deposited On:27 Nov 2009 13:50
Last Modified:15 Jun 2011 10:51

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