TOP CEF�?CRYSTAL SECRETS

The luminescence of nanocrystalline ZnS : Mn2+ indeed reveals a short decay time element (∼one hundred ns), but also an extended (ms) decay time is noticed. The small decay time is ascribed to some defect-similar emission of ZnS, and is not in the decay of your transition with the Mn2+ impurity. The changeover from the Mn2+ has a `usual�?decay