Photoluminescence Characteristic of Ce³⁺-Eu³⁺Co-doped Y₃Al₅O₁₂Phosphor Prepared by Combustion Method

Abstract

For this study, Yttrium aluminum garnet (YAG) particles co-doped with Eu3+ and Ce3+ were prepared by combustion process using the 1:1 ratio of metal ions as reagents. The characteristics of the synthesized nano powder were investigated by means of X-ray diffraction (XRD), Scanning Electron Microscope (SEM), and photoluminescence (PL). The various YAG peaks, with the (420) main peak, appeared at all Ce concentration in XRD patterns. The YAG phase crystallized with results that are in good agreement with the JCPDS diffraction file 33-0040. The SEM image showed that the resulting YAG:Ce,Eu powders had uniform sizes and good homogeneity. The grain size was about 50 nm. The photoluminescence spectra of the YAG:Ce,Eu nanoparticles were investigated to determine the energy level of electron transition related to luminescence processes. It was composed of a broad band of Ce3+ activator, inclusive of the line peaks of Eu3+. The PL intensity of Ce3+ has the wavelengths of 480–650 nm and the PL intensity of Eu3+ has main peak at 590 nm.