Electronic properties of tetrahedral amorphous carbon (ta-C) films containing nanotube regions

G. A.J. Amaratunga, M. Chhowalla, K. G. Lim, D. A.I. Munindradasa, S. D. Pringle, M. Baxendale, I. Alexandrou, C. J. Kiely, B. Keyse

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The electronic and optical properties of nitrogen doped tetrahedral amorphous carbon (ta-C:N) are compared with those of a new form of carbon ta-C film in which nanotube regions are included (ta-C(NT)). It is found that nanotubes in ta-C inhibit the N doping effect in ta-C and leads to a reduction in conductivity. The results point to the nanotube regions acting as electronically isolated graphitic regions in ta-C. The refractive index in ta-C:(NT) is found to have the opposite dependency on wavelength to that of ta-C. It is proposed that the refractive index can be used as a signature for the presence of nanotubes and other large graphitic regions in ta-C.

Original languageEnglish
Pages (from-to)575-579
Number of pages5
JournalCarbon
Volume36
Issue number5-6
DOIs
Publication statusPublished - Jan 1 1998

Keywords

  • A. Amorphous carbon
  • A. carbon nanotubes
  • D. electronic properties
  • D. optical properties

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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