Photo Luminescence (PL) and Electroluminescence (EL) Spectra in ZnS: Dy and ZnS:(Mn,Dy) Phosphors

摘要

ZnS:Dy and (ZnS:Mn,Dy) phosphors have been prepared in an inert atmosphere of pure nitrogen gas at about (95020) C. The photo luminescent (PL) and electroluminescent (EL) and spectra of these phosphors have been studied at room temperature. The purpose of this work is to know in what ways the spectraal characteristics of ZnS phosphors are affected by the introduction of Dy3t and Mn2t ions and also to determine unambiguously the electronic transitions involved in the energy transfer.