CREATING AND INVESTIGATING LUMINESCENT PROPERTIES OF Li2SrSiO4:RE

Abstract

Li₂SrSiO₄ phosphor doped with rare earth (RE) were prepared using a high tempereture solid-state reaction technique with CO gas. The X-ray diffraction (XRD) result showed that the material produced had a hexagonal crystal structure. The photoluminescence (PL) and photoluminescence excitation (PLE) of Li₂SrSiO₄:Eu²⁺ and Li₂SrSiO₄:Ce³⁺ were also investigated. Analysis results showed that the PLE spectrum of Li₂SrSiO₄:Eu²⁺ had two wide bands in the UV blue region; the PL spectrum had a wide band typical of the Eu²⁺ ion; the PLE spectrum of Li₂SrSiO₄:Ce³⁺ had two bands in the UV region and the PL spectrum shaped like a wide band in the near blue UV regioned showed that the Ce³⁺ion could function as an energy transfer ion in many co-doped phosphor materials that emit visible radiation.