Spatial distribution of electron emission sites for sulfur doped and intrinsic nanocrystalline diamond films

F. A.M. Köck, J. M. Garguilo, R. J. Nemanich, S. Gupta, B. R. Weiner, G. Morell

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

We have investigated high sp2 content intrinsic and sulfur doped nanocrystalline diamond films to study field emission properties by electron emission microscopy operated in different modes. Electron emission microscopy enables real time imaging of the electron emission from a surface with a lateral resolution of ∼15 nm. The nanocrystalline intrinsic diamond films exhibit electron emission at room temperature from localized emission sites with weak temperature dependence, and a density of ∼103-104/cm2. In contrast, sulfur doped diamond films show similar emission characteristics at room temperature, but at elevated temperatures the emission significantly increases from the localized regions and a thermionic component is identified in the I / V dependence. We discuss the role of S-donor states to explain the enhanced emission of the S-doped nanocrystalline diamond.

Original languageEnglish (US)
Pages (from-to)474-480
Number of pages7
JournalDiamond and Related Materials
Volume12
Issue number3-7
DOIs
StatePublished - Mar 1 2003
Externally publishedYes

Keywords

  • Field emission
  • Nanocrystalline
  • Plasma CVD

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Spatial distribution of electron emission sites for sulfur doped and intrinsic nanocrystalline diamond films'. Together they form a unique fingerprint.

  • Cite this