Synthesis and characterization of highly luminescent green emitting BaAl2O4: Tb3+ nanophosphors

In this work, highly efficient Tb3+ activated BaAl2O4 nanophosphor was synthesized by sol-gel method. Their crystal structure, morphology and microstructure have been investigated by X-ray powder diffraction (XRD), Field Emission Scanning Electronic Microscopy (FESEM) and High resolution transmission electron microscopy (HRTEM).The photoluminescence spectra (PL) revealed the influence of concentration variation of Tb3+ in the crystallinity and photoluminescence of the phosphor. The derived nanophosphors exhibit strong green emission produced by the 5D4 → 7Fj (j = 0-6) transitions of Tb3+ upon UV excitation. Obtained results show that this nanophosphor has the potential to compete in the growing field of solid-state lighting and field emission display devices.