Rare earth Eu3+ /Tb3+ -doped hollow microspheres (LaPO4 ) and core-shell nanocomposite luminescent materials with different transmittance (SiO2 @LaPO4 Eu3+ ) preparation and research on luminescence performance

Abstract

For the manufacture of hollow nanospheres that had different shapes, three distinct templates-urea, carbon microspheres, and polyethylene glycol 20,000-were used. The relationship between microspheres with various hollow structures and their luminescent properties were investigated. Furthermore, the effects of annealing temperature and the proportion of rare earth Eu³⁺ /Tb³⁺ ions in the reaction were investigated using the structural characteristics of the microspheres and fluorescent materials. The fluorescent materials were wrapped on the outer surface of the microspheres. The ideal balance between the best structure and superior luminescent performance was found, to create reasonably good white light.

Keywords: Eu3+/Tb3+; LaPO4; core-shell hollow nanospheres; different light transmittance; white light.