Crystal growth and photoluminescence of europium-doped strontium titanate prepared by a microwave hydrothermal method

Abstract: This article reports that europium-doped strontium titanate (SrTiO3:Eu3+) was successfully synthesized using a co-precipitation method at room temperature with processing in a microwave-hydrothermal system at 140 degrees C for 30 min. Phase composition and structure were examined using X-Ray Diffraction, and Fourier-Transform Raman spectroscopy, revealing a cubic structure with a Pm3m space group. The optical properties were investigated by ultraviolet-visible absorption and photoluminescence, which showed that red emissions originate from Eu3+ transitions. Field emission scanning electron microscopy revealed spherical-like Eu3+ doped SrTiO3 nanoparticles. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Author(s): Goncalves, RF; Moura, AP; Godinho, MJ; Longo, E; Machado, MAC; de Castro, DA  ; Li, MS; Marques, APA

CERAMICS INTERNATIONAL

DOI: 10.1016/j.ceramint.2014.11.018