Synthesis and photoluminescence of Ca1-xTiO3∶xEu3+ nanoparticles
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摘要:
Ca1-xTiO3∶xEu3+ 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 Ca1-xTiO3∶xEu3+ NPs were examined.An obvious red emission band centered at 615 nm were observed under the excitation with 395 nm for the Ca1-xTiO3∶xEu3+ NPs.X-ray photoelectron spectroscopy analyses suggest that Eu3+ is incorporated into not only the Ca-site,but also Ti-site of CaTiO3 crystal lattice.Our study shows the promise of the Ca1-xTiO3∶xEu3+ NPs as a red nanophosphor.