A REVIEW OF CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ in fact reveals a short decay time element (∼a hundred ns), but additionally an extended (ms) decay time is observed. The limited decay time is ascribed to your defect-similar emission of ZnS, and isn't with the decay with the changeover on the Mn2+ impurity. The transition from the Mn2+ includes a `