Synthesis of manganese doped zinc sulphide nanocrystalline powders by wet-chemical synthesis route

Abstract

Manganese-doped zinc sulphide nanocrystalline powders with photoluminescence properties were synthesised by wet-chemical synthesis route WCS via the reagent simultaneous addition technique SimAdd. In order to control both the morpho-structural and optical properties of ZnS:Mn2+ nanoparticles, precipitation was carried out, from sodium sulphide and zinc-manganese acetate mixture with variable manganese amount, in methanol medium containing methacrylic acid, sodium dodecylsulphate or cetyl-trimethyl-ammonium bromide as organic additives. Samples were characterized by ICP-optical emission spectroscopy, thermogravimetric analysis, infrared absorption spectroscopy, photoluminescence spectroscopy, transmission electron microscopy and X-ray diffraction. A correlation between the preparation conditions and the physical-chemical properties, photoluminescence and morpho-structural characteristics of ZnS:Mn2+ powders were established.