Abstract
Abstract Cl − -doped ZnS (ZnS:Cl − ) nanoparticles with strong blue emission were synthesized using a facile low temperature solid state reaction method. X-ray powder diffraction, scanning electron microscopy, UV–vis absorption, and X-ray photoelectron spectroscopy were used to characterize their crystal structures, microstructural characteristics, and chemical compositions, respectively. The ZnS:Cl − nanoparticles were quasi-spherical in shape and had a cubic zincblende crystal structure. Cl − doping was found to lead to a reduction in the crystallite size of the ZnS:Cl − nanoparticles. It showed that Cl − doping remarkably enhanced the luminescence properties of the ZnS:Cl − nanoparticles, and an optimal Cl − doping condition was determined. Post annealing was found to further improve the luminescence properties of the ZnS:Cl − nanoparticles. The effect of post annealing temperature on the luminescence properties of the ZnS:Cl − nanoparticles was systematically studied and discussed.
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