Related Experiment Video
Updated: Sep 23, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
Published on: July 24, 2015
The adsorption state and the evolution of field emission properties of graphene edges at different temperatures
Lijuan Jiang1,2, Peng Liu2, Lina Zhang2
1Department of Physics and Electronic Engineering, Xinxiang University Xinxiang 453003 China.
Abstract:
We have studied the effects of adsorbates on the field emission (FE) properties of graphene edges at different temperatures using Joule heating. Using infrared imaging and spectral fitting, the temperature from room temperature to about 1000 K was measured accurately. It was found that adsorption induces the deviation of graphene edge field emission from the Fowler-Nordheim law and the noise of the field emission. The adsorbates are gradually desorbed with an increase in temperature, and are almost completely desorbed above about 500 K. The FE of graphene edges without adsorption is fairly consistent with the FN theory.

