NOT KNOWN FACTS ABOUT CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ certainly shows a brief decay time ingredient (∼100 ns), but additionally a long (ms) decay time is noticed. The limited decay time is ascribed to some defect-similar emission of ZnS, and is not with the decay on the transition in the Mn2+ impurity. The transition in the Mn2+ incorporates a `standard