THE DEFINITIVE GUIDE TO CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ indeed exhibits a brief decay time part (∼one hundred ns), but in addition an extended (ms) decay time is observed. The quick decay time is ascribed to the defect-linked emission of ZnS, and is not from the decay in the changeover from the Mn2+ impurity. The changeover from the Mn2+ features a `typic