NOT KNOWN FACTS ABOUT CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ in fact reveals a short decay time component (∼100 ns), but also a protracted (ms) decay time is noticed. The limited decay time is ascribed to your defect-related emission of ZnS, and isn't through the decay with the transition of the Mn2+ impurity. The changeover from the Mn2+ has a `usual�?decay