Study of the Cathodoluminesence Properties of Sio2:Pr3+ and Zno.Sio2: Pr3+ Nanopowder Phosphors and Investigated the Dependence of Luminescence Properties

The present study focused on the luminescence behavior of trivalent rare earth ions in sol-gel derived SiO₂ and ZnO co-doped SiO₂:Pr³⁺ nanophosphors, with the aim of understanding their cathodoluminescence (CL) characteristics under varying synthesis and experimental conditions. The research specifically investigated the dependence of luminescence properties of SiO₂:Pr³⁺ on dopant concentration, annealing temperature, and ZnO incorporation. Additionally, the influence of concentration, beam voltage, and current on the CL intensity of SiO₂:Pr³ was examined. The materials were synthesized using the sol-gel method, which offered controlled morphology and homogeneity in the formation of nanostructures. The synthesized samples were characterized using X-ray diffraction (XRD) for structural analysis, scanning electron microscopy (SEM) for surface morphology, optical absorption and emission properties. the study also analyzed luminescence degradation machanisms in SiO2:Pr3+, ZnO.SiO2:Pr3+.