Field induced electron emission from graphene nanostructures

Abstract

Electric fields play a crucial role in modulating the electronic properties of nanoscale materials. Electron emission, induced by an electric field, is a representative phenomenon. Experimental and theoretical aspects of such electron emission from graphene are briefly reviewed. The emission occurs at the edge of graphene flakes, not at the surface, because the edge highly concentrates the electric field. Emission currents are sensitive to the edge shapes and edge fictionalization. This review provides guiding principles for designing high-efficiency field-emission devices by using graphene nanostructures.

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

“…Moreover, cold electron devices could work at the high-frequency and wide-bandwidth regime. Vacuum devices based on cold electron sources can be further miniaturized and are lightweight and portable [4][5][6]. Also, the field emission electron source can achieve high current, high current density, low power consumption, and wide operating temperature range [7][8][9].…”