NOT KNOWN FACTS ABOUT CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ in fact displays a brief decay time element (∼a hundred ns), but in addition a lengthy (ms) decay time is observed. The shorter decay time is ascribed into a defect-associated emission of ZnS, and isn't from the decay on the changeover from the Mn2+ impurity. The transition with the Mn2+ has a `stand