Preparation and characterization of nano sized pure ZnTe and antimony doped ZnTe nano thin films by spray pyrolysis technique

Abstract

Antimony doped ZnTe thin films developed by spray pyrolysis technique. The deposited thin films are characterized by X-ra diffraction (XRD), scanning electron microscope (SEM), energy dispersive electron microscopy (EDS) and ulra-violet visible spectroscopy (UV-Vis). XRD studies indicate that antimony doping in host result a crystallinity change. The average particle size calculated from XRD values is in good agreement with the SEM results. EDS spectrum is a good evidence of confirm the formation of antimony doped ZnTe. An optical band gap calculated value varying from 2.3 eV to1.9 eV. The extinction coefficient increases depending on the temperature 300 ̊ C, 350 ̊ C and 400 ̊ C.