Synthesis and cathodoluminescent properties of Lu3(Al,Ga)5O12 : Tb3+ with and without niobium-doped TiO2 coating

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

2 Scopus Citations
View graph of relations



Original languageEnglish
Pages (from-to)355-360
Journal / PublicationJournal of Sol-Gel Science and Technology
Issue number2
Publication statusPublished - 1 Feb 2016


Abstract: (Lu0.95Tb0.05)3(Al0.80Ga0.20)5O12 (LuAGG:Tb) phosphor is synthesized by a high-temperature solid-state reaction, and a thin layer of niobium-doped TiO2 (NTO) is deposited on the phosphor particles by coprecipitation-assisted solvothermal synthesis. The crystal structure, micromorphology, chemical bonding, and cathodoluminescent (CL) properties of both the uncoated and NTO-coated phosphors are determined. The phosphor powders possess a single phase, and the average diameter of the particles is about 3 μm. NTO nanoparticles with the anatase crystal structure are connected to the phosphor particles electrostatically. Both types of phosphors exhibit the characteristic emission spectrum of Tb3+ under electron excitation. The CL intensity decreases, whereas the resistance to luminance saturation and degradation increases with the coating. Graphical Abstract: [Figure not available: see fulltext.]

Research Area(s)

  • Cathodoluminescence, Coprecipitation-assisted solvothermal synthesis, Lutetium garnet, TiO2 coating