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

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.

Study of the Electronic Structure and Optical Properties of Rare Earth Luminescent Materials

“…For this reason, our research aims to delve deep into the electronic structure and optical properties of rare earth luminescent materials, seeking to uncover the underlying luminescence mechanisms and potential applications [3]. Through in-depth analysis of their atomic-level structure and band characteristics, we aspire to achieve a comprehensive understanding of their behaviors in stimulated transitions, energy transfer, and beyond [4]. Through systematic experimentation and theoretical exploration, our objective is to reveal the distribution of electronic energy levels within rare earth luminescent materials, as well as the transition pathways between different energy levels, thereby establishing a solid foundation for elucidating their luminescence mechanisms [5].…”