UV Raman characteristics of nanocrystalline diamond films with different grain size

Z. Sun, J. R. Shi, B. K. Tay, Shu Ping Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

163 Citations (Scopus)

Abstract

Nanocrystalline diamond films with different size were characterized by ultraviolet (UV) (244 nm) Raman spectroscopy. It was found that a diamond peak at 1333 cm-1was enhanced, while the D and G peak of graphite as well as photoluminescence was suppressed, compared with that measured by visible (514.5 nm) Raman. With decreasing the particle size from 120 to 28 nm, the diamond peak shifts from 1332.8 to 1329.6 cm-1, the line width of the peak becomes broader, the intensity ratio of diamond and G peak decreases. The down shift and broadening of the diamond peak depending on the particle size by UV Raman measurements are consistent with the phonon confinement model.
Original languageEnglish
Pages (from-to)1979-1983
Number of pages5
JournalDiamond and Related Materials
Volume9
Issue number12
DOIs
Publication statusPublished - 1 Jan 2000
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Materials Chemistry
  • Electrical and Electronic Engineering

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