Specific features of the luminescence and conductivity of zinc selenide on exposure to X-ray and optical excitation

TL;DR

This paper compares the luminescence and conductivity of zinc selenide under X-ray and optical excitation, revealing how excitation type influences charge dynamics and spectral features in wide-gap semiconductors.

Contribution

It provides experimental insights into how different excitation methods affect luminescence, conductivity, and charge recombination in ZnSe.

Findings

X-ray and optical excitation produce different luminescence and conductivity behaviors.

External electric fields modify luminescence spectral bands.

Excitation type determines charge recombination and trapping kinetics.

Abstract

The set of experimental data on the X-ray-excited luminescence and X-ray induced conductivity of ZnSe are compared to the data on the photoluminescence and photoconductivity. It is experimentally established that the current-voltage characteristics and the kinetics of phosphorescence and current relaxation depend on the type of excitation. It is found that the external electric field influences the intensity and shape of bands in the luminescence spectra. It is shown that the character of excitation defines the kinetics of recombination, charge carrier trapping, and conductivity in wide-gap semiconductors.