Fabrication and field emission study of novel rod-shaped diamond-like carbon nanostructures

Deepak Varshney*, Vladimir I. Makarov, Puja Saxena, Adolfo Gonzalez-Berrios, James F. Scott, Brad R. Weiner, Gerardo Morell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Novel sp(3) rich diamond-like carbon nanorod films were fabricated by a hot filament chemical vapour deposition technique. The results are indicative of a bottom-up synthesis process, which results in a hierarchical structure that consists of microscale papillae comprising numerous nanorods. The papillae have diameters ranging from 2 to 4 mu m and the nanorods have diameters in the 35-45 nm range. A growth mechanism based on the vapour-liquid-solid mechanism is proposed that accounts for the morphological aspects at the microscale and nanoscale. Investigation of field emission properties of fabricated nanorods reveals a low turn-on field of about 4.9 V mu m(-1) at 1 nA and a high field-enhancement factor.

Original languageEnglish
Article number285301
Number of pages7
JournalNanotechnology
Volume21
Issue number28
DOIs
Publication statusPublished - 16 Jul 2010

Keywords

  • CHEMICAL-VAPOR-DEPOSITION
  • ENERGY-LOSS SPECTROSCOPY
  • AMORPHOUS-CARBON
  • THIN-FILMS
  • NANOCRYSTALLINE DIAMOND
  • RAMAN-SPECTROSCOPY
  • ELECTRON
  • PLASMA
  • NANOTUBES
  • NITROGEN

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