Paper Title:
Nitrogen Effects on Optical and Electrical Properties of Amorphous Carbon
  Abstract

Optical and electrical properties amorphous carbon nitride (a-CN) has been investigated on films deposited by reactive R.F. sputtering source with a graphite target. The amorphous carbon nitride samples were prepared under a gas mixture of nitrogen (N2) and /or Argon (Ar).The optical transitions are governed by the  and * electronic state distributions, related to sp2- and sp1-hybridized C and N atoms. Specific lonepair electronic states arise from groups (CN) with sp1-hybridized C atoms, which may form C≡N triple bonds or —N=C=N— longer chains. Photoluminescence spectra show a maximum around 650 nm. Two conduction regimes at high and low temperature are found in a-CN samples. The corresponding activation energies decrease with the increase of target voltage.

  Info
Periodical
Materials Science Forum (Volumes 636-637)
Edited by
Luís Guerra ROSA and Fernanda MARGARIDO
Pages
423-429
DOI
10.4028/www.scientific.net/MSF.636-637.423
Citation
M. Fathallah, N. Alassimi, N. Alzayed, R. Gharbi, "Nitrogen Effects on Optical and Electrical Properties of Amorphous Carbon", Materials Science Forum, Vols. 636-637, pp. 423-429, 2010
Online since
January 2010
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$32.00
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