Synthesis and Optical Properties Study of ZnS Crystallitic Films

Abstract

This manuscript presents the synthesis and characterization of ZnS crystallitic films on ITO conducting glass by a simple hydrothermal method, based on sulfuration conversion from Zn nanocrystallines which are synthesized by pulse-plating technology. X-ray diffraction (XRD), scanning electron microscopy (SEM) and equipped with Oxford 7538 (EDS) analyzer techniques were used to characterize the Zn nanocrystallines and the novel ZnS crystallitic films. The results showed that ZnS crystallitic films were wurtzite, uniform and compact. Furthermore, the existence of Zn nanocrystallines and the complexing agent 5-sulfosalicylate influenced the microsopic morphology of ZnS crystallitic films. The optical properties, band gap energy and the size of nanocrystals were studied by UV-vis spectrophotometer measurements. A photoluminescence (PL) study of the ZnS at room temperature (300 K) indicates a strong luminescence band at energy 5.3 eV.