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Abstract. GdVO4 with activators Eu, Dy, Sm and Bi has been synthesised by a solid-state reaction. GdVO4:Eu3+ (3%) yielded the highest quantum efficiency of 95%. Interesting energy-transfer properties have been revealed in the mixed-activator phosphor (GdVO4:Eu3+, Sm3+) when excited in the 4f shell of Sm3+ at 408nm. Bismuth-activated GdVO4 gives rise to a broad-band emission peaking at 525nm in comparison...
Abstract. The doubly doped (Bi3+ and Eu3+) GdVO4 powder is synthesized by hydrolyzed colloid reaction (HCR) technique and formation of material is confirmed by XRD measurement. Surface morphology has been studied by SEM measurement and the result shows uniform surface morphology. The average particle size observed by SEM is about 1m. The Fritsch particle sizer is used to study the particle size distribution...
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