Electron emission from disordered tetrahedral carbon

B. L. Weiss, A. Badzian, L. Pilione, T. Badzian, W. Drawl

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22 Scopus citations

Abstract

Electron field-emission tests have been performed on films grown by a modified microwave plasma assisted chemical vapor deposition diamond process. This modification includes the addition of N2 and O2 during the growth stage. Characterization of these films shows the presence of a disordered tetrahedral carbon structure. Raman spectroscopy indicates a disturbance in the cubic symmetry of the lattice and x-ray diffraction indicates a disordered tetrahedral structure. Field-emission testing indicate that current densities of 0.5 mA/cm2 can be obtained for applied fields of 5-8 V/μm. The results are explained in terms of a change in the band structure and the formation of electronic states in the band gap.

Original languageEnglish (US)
Pages (from-to)794-796
Number of pages3
JournalApplied Physics Letters
Volume71
Issue number6
DOIs
StatePublished - Aug 11 1997

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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