Field emission conduction mechanisms in chemical vapor deposited diamond and diamondlike carbon films

Field emission properties of undoped chemical vapor deposited diamond and diamondlike carbon films have been measured for a variety of different deposition conditions. The nature and appearance of the damage site after testing, together with the mathematical form of the observed current-voltage relations, are correlated with the conductivity of the film. This is consistent with a model for the overall current which is a combination of conduction mechanisms through the bulk of the film with Fowler-Nordheim tunneling. (C) 1998 American Institute of Physics.