“…The solid state diffusion method (SSDM) was employed to synthesize the SrS: Ce 3+ (0.1%, 0.25%, 0.5%, 0.75% and 1 mol%) nanophosphors [18]. Strontium sulfate (SrSO 4 ) and activated charcoal were taken in a stoichiometric ratio, while sodium thiosulfate (Na 2 S 2 O 3 ) used as flux was 15% of the amount of strontium sulfate.…”