Zhuk A. The evolution of structural and luminescent properties ZnS, obtained by the method of self-propagating high temperature synthesis, which is caused by additional processing

The work is devoted to the research of influence of modes of synthesis and post-technological treatments on the structural and luminescence characteristics ZnS, obtained by the method of self-propagating high temperature synthesis, and doped during the synthesis. In this paper were investigated which received by this method micro-, meso- and nanosized ZnS:Cu and ZnS:Mn. The study allowed to set that during the synthesis with modes that allow to receive low dispersed material, in admixture volume is unevenly distributed, except in the ZnS:Cu and ZnS:Mn are formed metal phases of CuZn and Mn respectively. Thermal annealing of ZnS:Cu and ZnS:Mn at 800C leads to a more uniform distribution of admixtures in the volume of material and additional doping of material with metallic phase. It is possible to explain the non-monotonic dependence of spectral characteristics from the time of heating furnace to a temperature annealing. The nature of radiative center was found, which responsible for the blue photoluminescence strip in ZnS:Cu, which is a close donor-acceptor pair - Cu in place of zinc and interstitial atom Cu, the distance between donor and acceptor in this pair - r~6A. The influence of the ultrasound, pulsed magnetic field, microwave radiation and mechanical destruction on defective structure of ZnS:Mn, was researched. The model was offeres that explains the reason for the defect complexes which include pair - zinc vacancy and interstitial atom of zinc, which responsible for self-activated luminescence of the radiation 455 nm in ZnS.