Numerical Model Development for Carbon-Based Field Emission Electron Sources

Abstract

Work function variations over cathode surface and initial energy spread of emitted electrons are necessary input parameters and initial-boundary conditions for realistic simulations and numerical modeling of field emission electron sources to span millimeter to nanometer scales. This work advances the state of research in the field due to prediction a priori foregoing values for carbon-based cathodes using density functional theory. A new method for constructing a quantum-mechanical cluster model is applied to the study of the properties of systems of solid-state silicon carbide with organic films deposited on it, consisting of graphene sheet and 2D fullerene.