Abstract
The observed current–voltage relations from the field emission of electrons from a number of different types of diamond and diamond-like films have been fitted to a variety of mathematical models for charge transport through poor conductors. We find that the Fowler–Nordheim model provides no better a description for the overall conduction mechanism than three alternative mechanisms involving transport through the bulk, and this holds for emission from natural diamond, various doped and undoped CVD diamond films, and diamond-like carbon (a-C:H).
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