UV Luminescence Property of YPO₄:RE (RE = Ce³⁺, Tb³⁺)

Abstract

Blue-emitting YPO4:Ce3+ and green-emitting YPO4:Tb3+ and YPO4:Ce3+,Tb3+ phosphor particles were synthesized by coprecipitation method. Their structure and micromorphology have been analyzed by X-ray powder diffraction (XRD), FTIR spectra, and scanning electronic microscope (SEM). The transitions of Ce3+ 5d−4f and Tb3+ 5D4−7FJ (J = 6−3) were detected, and the photoluminescence intensity of the Tb3+ increased on increasing the concentration of Ce3+. Finally, the energy-transfer process from Ce3+ to Tb3+ was investigated in YPO4:Ce3+,Tb3+ nanoparticles in detail. These nanoparticles can be potentially used as labels for biological molecules.