Field emission from single and few-layer graphene flakes

Details Field emission from single and few-layer graphene flakes Field emission from single and few-layer graphene flakes

2011-02-16

arxiv.org/abs/1102.3273v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We report the observation and characterization of field emission current from individual single- and few-layer graphene flakes laid on a flat SiO2/Si substrate. Measurements were performed in a scanning electron microscope chamber equipped with nanoprobes, used as electrodes to realize local measurements of the field emission current. We achieved field emission currents up to 1 {\mu}A from the flat part of graphene flakes at applied fields of few hundred V/{\mu}m. We found that emission process is stable over a period of several hours and that it is well described by a Fowler-Nordheim model for currents over 5 orders of magnitude.

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