Field electron emission characteristic of graphene

TL;DR

This paper presents an analytical model for field electron emission from graphene, considering its unique band structure and field penetration, aligning well with experimental Fowler-Nordheim data.

Contribution

It introduces a semiclassical analytical model that accounts for graphene's electronic structure and field effects, providing insights into emission characteristics.

Findings

The model accurately predicts the Fowler-Nordheim slope.

The relation between vacuum barrier height and applied field is established.

Results are consistent with experimental observations.

Abstract

The field electron emission current from graphene is calculated analytically on a semiclassical model. The unique electronic energy band structure of graphene and the field penetration in the edge from which the electrons emit have been taken into account. The relation between the effective vacuum barrier height and the applied field is obtained. The calculated slope of the Fowler-Nordheim plot of the current-field characteristic is in consistent with existing experiments.