Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-02-16
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.
Bartolomeo Antonio Di
Giubileo Filippo
Grossi V.
Lupina Grzegorz
Passacantando M.
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