Theoretical calculation of cathodoluminescence: Influence of surface and bulk parameters on the depletion region of p-type CdTe

Abstract

The study of the influence of the surface and bulk parameters on the depletion region, created by electronic excitation, has been performed on [Formula: see text]-type CdTe. The surface effect is given by two parameters: the energy of surface defects [Formula: see text] and their surface state density [Formula: see text]. However the volume effect is characterized by the diffusion length [Formula: see text] and the concentration of acceptors [Formula: see text]. This investigation demonstrated that, for high values of the excitation beam intensity, the depth of the depletion region [Formula: see text] decreases as [Formula: see text] and [Formula: see text] decrease and when [Formula: see text] and [Formula: see text] increase.