CUED Publications database

Low field electron emission from nanoclustered carbon grown by cathodic arc

Satyanarayana, BS and Robertson, J and Milne, WI (2000) Low field electron emission from nanoclustered carbon grown by cathodic arc. Diamond and Related Materials, 9. pp. 1213-1217. ISSN 0925-9635

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Abstract

Nanocluster carbon films grown using a cathodic arc process at room temperature in the presence of background gases such as helium are found to be good electron emitters. The variation in the surface morphology and the corresponding emission characteristics of the films with change in helium partial pressure (5×10-4 to 50 Torr) during film growth are reported. The effect of helium partial pressure on clustering was studied for films grown at nitrogen partial pressures of 10-4 and 10-3 Torr. The surface morphology of the films varied from smooth through clusters (with sizes 50-200 nm) to fibrous films. The threshold field varied from 1 to 10 V/μm for an emission current density 1 μA/cm2.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:43
Last Modified: 27 Nov 2014 19:23
DOI: 10.1016/S0925-9635(99)00304-0