AN UNBIASED VIEW OF CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ certainly reveals a brief decay time element (∼100 ns), but also a protracted (ms) decay time is observed. The brief decay time is ascribed to your defect-associated emission of ZnS, and isn't through the decay of the transition with the Mn2+ impurity. The changeover on the Mn2+ features a `regularï¿