Synthesis and Characterization of YAG:Ce3+ Nanophosphor prepared by Flame Spray Pyrolysis

Abstract

Among the various types of synthesis techniques for phosphors, flame spray pyrolysis (FSP) is a powerful method which is capable of producing particles with good crystallinity and high luminescence efficiency. In this work, we have studied the possibility of producing yellow light emitting Ce3+ doped Y3Al5O12 (YAG:Ce3+) nanophosphor particles using FSP. The challenges in forming YAG arises is because of its complex stoichiometry and existence of numerous crystalline states. 3 M of urea was added to increase the flame temperature. The as-prepared nanoparticles were annealed in the temperature range 800° to 1100° for 1 hour. As-prepared phosphor particles were found to be YAlO3 which transformed to YAG when annealed above 900°. PL intensity of the phosphors increased with increase in annealing temperature above 900°. These results indicate the possibility of the fabrication of high quality YAG:Ce3+ nanophosphor particles via a simple process.