Ab-initio Calculation Study of Electronic Band Structure of CdTe with Low-index Surface

Abstract

In this paper, the electronic properties of CdTe (100) films without impurities and with the addition of O2 molecules were investigated based on calculations from first principles. It was found that when the oxygen concentration increases from 8 to 14 %, the O2 molecule passes the energy barrier more easily, which indicates an increase in the catalytic activity of the CdTe film. Since oxygen affects the catalytic process, we recorded the movement of the band gap depending on the oxygen concentration. According to the calculated results of the study of small diatomic and triatomic clusters (Te, Cd), we found that the inclusion of oxygen atoms or atoms of other kinds in small clusters (Te, Cd) affects the catalytic activity of the studied systems as a whole.