Abstract
Tb3+doped YSrAl3O7 nanoparticles have been prepared by solution combustion synthesis process using urea as a fuel. Morphology and luminescent properties of Y1-xSrAl3O7:xTb3+(Tb = 5, 10 12 mol %) nanoparticles were characterized by scanning electron microscopy, transmission electron microscopy, fluorescence spectrometry and X-ray diffraction studies. The incorporation of Tb3+activator in these nanoparticles has been checked by luminescence characteristics. The prepared nanoparticles under UV source revealed green luminescence. The emission spectra indicated the excellent green photoluminescent properties of YSrAl3O7:Tb3+nanoparticles due to characteristics transition of Tb3+ions from 5D4→ 7F5at 544 nm (λex=251 nm).The dependenceof the luminescence intensity on Tb3+ ions concentrations and effect of heat treatment have also been discussed. The excitation spectrum of YSrAl3O7:Tb3+was observed with maximum peak at 251 nm (λem=544 nm). From TEM studies it was observed that nanoparticles have average size from 10 nm to 22 nm. These nanoparticles may be used in the fields of high-performance luminescent devices, catalysts and other functional materials due to their exceptionalelectronic, optical and chemical characteristics arising from 4f electrons. Keywords:YSrAl3O7:Tb3+, Nanoparticles, Urea, Green luminescence.*Corresponding Author: Tel: +91 9813805666.