Effect of Annealing Temperature on ZnS Nanoparticle's Nanostructural and Optical Properties

ZnS nanoparticles were synthesized by chemical precipitation method. As-prepared ZnS nanoparticles were found to be stabilized in the form of cubic phase. Cubic to hexagonal structural transformation was studied using X-ray diffraction (XRD). The effect of annealing temperature (100-700 􀁄C) on the band gap, particle size, and structural phase was investigated.Photoluminescence studies indicated two strong and narrow emission peaks in blue and orange regions. These two strong and narrow emission peaks were shifted to blue and red regions by increasing the annealing temperature.