AN UNBIASED VIEW OF CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ without a doubt demonstrates a brief decay time part (∼a hundred ns), but in addition a long (ms) decay time is noticed. The short decay time is ascribed to the defect-linked emission of ZnS, and is not from the decay on the changeover on the Mn2+ impurity. The transition with the Mn2+ provides a `ty