THE BASIC PRINCIPLES OF CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ indeed demonstrates a short decay time ingredient (∼one hundred ns), but also a protracted (ms) decay time is observed. The shorter decay time is ascribed to a defect-connected emission of ZnS, and is not with the decay on the changeover on the Mn2+ impurity. The transition of the Mn2+ incorporates a