FACTS ABOUT CEF�?CRYSTAL REVEALED

The luminescence of nanocrystalline ZnS : Mn2+ without a doubt demonstrates a brief decay time component (∼100 ns), but in addition an extended (ms) decay time is observed. The small decay time is ascribed to a defect-relevant emission of ZnS, and is not in the decay in the transition on the Mn2+ impurity. The changeover on the Mn2+ incorporates