ABOUT CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ in truth demonstrates a short decay time part (∼100 ns), but additionally a lengthy (ms) decay time is observed. The shorter decay time is ascribed into a defect-related emission of ZnS, and is not through the decay of the changeover on the Mn2+ impurity. The changeover of the Mn2+ provides a `normal