THE DEFINITIVE GUIDE TO CEF�?CRYSTAL

The luminescence of nanocrystalline ZnS : Mn2+ in truth shows a short decay time element (∼one hundred ns), but in addition a long (ms) decay time is noticed. The small decay time is ascribed to some defect-similar emission of ZnS, and isn't from the decay of the transition on the Mn2+ impurity. The changeover with the Mn2+ has a `regular�?deca

The luminescent Ge-relevant structure was well prepared by ion implantation of Ge ions into diamond and subsequent annealing or CVD. Superior purity IIa-type (001) single-crystal diamond substrates (Aspect six, electronic grade) were useful for the ion implantation experiments. The amount of nitrogen impurities in the substrate is under 5 ppb. Impl