Luminescence of manganese-doped zinc sulfide obtained by self-propagating high-temperature synthesis

Abstract

Materials based on A2B 6 compounds, in particular, zinc sulfide, are promising for many practical applications. Conventional methods for preparation of luminophores based on zinc sulfide [I] by growth of crystals from a melt, from a gas phase, and from aqueous solutions are known. Self-propagating high-temperature synthesis (SHS) is a new method for preparation of binary compounds [2]. It has enabled preparation of polycrystalline ZnS [3], for which the starting components Zn and S with particle size I-I0 ~mwere mixed and pressed; the synthesis was carried out in a reactor at P e 40 atm, and the reaction was initiated by local heating; as a result of propagation of a thermal wave through the mixture, a final product was formed from the melt. The chemical properties of zinc sulfide obtained by SHS were studied in [4]. For preparation of luminophores based on ZnS with a changing spectral region, activating additives in the form of a fine powder were added to the starting mixture.