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Electron Field Emission From Diamond-Like Carbon

Published online by Cambridge University Press:  15 February 2011

J Robertson,
S R P Silva,
G A J Amaratunga and
W I Milne
J Robertson
Affiliation:
Engineering Dept, Cambridge University, Cambridge CB2 1PZ, UK
S R P Silva
Affiliation:
Electronic Engineering Dept, Surrey University, Guildford, GU2 5XH, UK
G A J Amaratunga
Affiliation:
Electronic Engineering Dept, Liverpool University, Liverpool L69 3BX, UK
W I Milne
Affiliation:
Engineering Dept, Cambridge University, Cambridge CB2 1PZ, UK
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Abstract

The low electron affinity of a-C:H is related to that of diamond surfaces and is studied using a chemical bonding model. The electron field emission from hydrogenated amorphous carbon (a-C:H) and nitrogen modified a-C:H showing low turn on fields are described. Nitrogen improves the field emission, apparently by raising the Fermi level.

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