Research on the progress of Ce3+,Tb3+ co-activated phosphate luminescent materials prepared by hydrothermal method

Abstract

Abstract Due to the special optical properties of rare earth elements, rare earth luminescent materials have been widely used in lighting, medical radiological images, detection and recording of radiation field and other fields. Through the research and analysis of phosphate LaPO4:(Ce3+,Tb3+), Ca9Y (PO4):(Ce3+,Tb3+), GdPO4:(Ce3+,Tb3+) composite materials by the hydrothermal preparation of cerium-terbium co-activated, the hydrothermal preparation process (additives, reaction system pH, hydrothermal time, hydrothermal temperature, etc.), luminescent properties and application status were clarified. XRD and SEM were used to analyze the effect of hydrothermal preparation process on the phase composition and morphology of samples, and the energy transfer efficiency was determined. PL spectroscopic analysis shows that the 4f→5d and 5D4→7Fj (j=6,5,4,3) transitions in Ce3+-Tb3+ UV region have been demonstrated in a variety of matrix materials, enabling efficient energy transfer in co-doped ion combinations., and the concentration of doping ions will significantly affect the luminescence properties.