Effect of Thermal Annealing On the Optical and Structure Properties of Znse Thin Films


Thin films of ZnSe were deposited on glass substrate by thermalevaporation, effect of annealing temperature on the X-ray diffraction and opticalproperties of the films have been investigated. X-ray diffraction shows that preparedfilms are polycrystalline with preferred [111] orientation and having a zinc blendcubic structure.The lattice constant has been evaluated for ZnSe, it's value was found to bedecreasing with annealing temperature and then after returns to increases. Fromoptical measurement, it found that optical band gap have unstable changes withannealing temperature while the absorption coefficient increase with annealingtemperature