Synthesis and Doping of Zinc Sulfide in a Homogeneous System Based on Dodecane, Its Identification and Optical Properties

Zinc sulfide doped with Mn²⁺ ions was synthesized in a homogeneous dodecane medium using the emerging reagent method. Using the methods of chemical analysis, X-ray powder diffraction, IR spectroscopy, and electron microprobe microscopy, the products were identified and photographs of the surface of powder particles (SEM) were obtained. Based on the results obtained, it was concluded that nano-sized objects are formed that have a polytype structure with a predominance of distorted cubic crystals, forming agglomerates up to 10 μm in size in ZnS powder and up to 100 μm in ZnS–Mn powder. The formation of nanosized ZnS particles is confirmed by spectral data. The influence of manganese ions on the photoluminescence (PL) of the powder manifests itself in a change in the type of the descending branch of the ZnS–Mn PL band; this is associated with recombination processes at the levels of defects formed by Mn²⁺ ions in the ZnS structure at their low concentration.