Luminescent properties of LaAlO3:RE (RE = Eu3+, Tb 3+) prepared by microwave-assisted self-combustion method (original) (raw)

LaAlO3:Eu3+ and LaAlO3:Tb3+ phosphors were prepared by microwave-induced combustion reaction. X-ray diffraction (XRD), scanning electron microscopy (SEN) and photoluminescence spectroscopy (PL) were used to characterize the produced powders. X-ray diffraction patterns confirmed the formation of nanocrystalline LaAlO3 oxide. Traces of secondary phase, La(OH)3, were observed in the pattern of the sample doped with terbium. Under UV excitation, Eu3+ and Tb3+-doped LaAlO3 phosphors show red and blue/green photoluminescence, respectively. These systems are potential candidates for use as luminescent materials.