ELECTRON-EMISSION FROM DISORDERED TETRAHEDRAL CARBON

Citation
Bl. Weiss et al., ELECTRON-EMISSION FROM DISORDERED TETRAHEDRAL CARBON, Applied physics letters, 71(6), 1997, pp. 794-796
Citations number
26
Categorie Soggetti
Physics, Applied
Journal title
ISSN journal
00036951
Volume
71
Issue
6
Year of publication
1997
Pages
794 - 796
Database
ISI
SICI code
0003-6951(1997)71:6<794:EFDTC>2.0.ZU;2-#
Abstract
Electron held-emission tests have been performed on films grown by a m odified microwave plasma assisted chemical vapor deposition diamond pr ocess. This modification includes the addition of N-2 and O-2 during t he growth stage. Characterization of these films shows the presence of a disordered tetrahedral carbon structure. Raman spectroscopy indicat es a disturbance in the cubic symmetry of the lattice and x-ray diffra ction indicates a disordered tetrahedral structure. Field-emission tes ting indicate that current densities of 0.5 mA/cm(2) can be obtained f or applied fields of 5-8 V/mu m. The results are explained in terms of a change in the band structure and the formation of electronic states in the band gap. (C) 1997 American Institute of Physics.