THE BEST SIDE OF CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ in truth shows a brief decay time component (∼a hundred ns), and also an extended (ms) decay time is observed. The quick decay time is ascribed to a defect-connected emission of ZnS, and is not through the decay of the changeover on the Mn2+ impurity. The changeover with the Mn2+ provides a `typical�