Synthesis and photoluminescence of Ca1-xTiO3 ：xEu^3＋ nanoparticles

摘要

Ca_(1-x)TiO_3:xEu^(3+) nanoparticles(NPs) with the size ranging from 27 nm to 135 nm were prepared by means of a chemical co-precipitation method. The structural and optical properties of the NPs were investigated,and the influence of Eu doping content and sintering temperature on the photoluminescence of the Ca_(1-x)TiO_3:xEu^(3+) NPs were examined. An obvious red emission band centered at 615 nm were observed under the excitation with 395 nm for the Ca_(1-x)TiO_3:xEu^(3+)NPs. X-ray photoelectron spectroscopy analyses suggest that Eu^(3+) is incorporated into not only the Ca-site, but also Ti-site of Ca TiO_3 crystal lattice. Our study shows the promise of the Ca_(1-x)TiO_3:xEu^(3+) NPs as a red nanophosphor.