Synthesis and luminescence properties of Eu3+ doped BaGd2Ti4O13 phosphors

Abstract We synthesized the trivalent europium ions (Eu 3+ ) doped BaGd 2 Ti 4 O 13 (BGT) phosphors by a sol–gel method and investigated their luminescence properties by varying the dopant concentration. The BGT host material showed the pure orthorhombic phase after annealing at 1350 °C for 40 h. The photoluminescence (PL) emission of BGT:Eu 3+ phosphors exhibited 5 D 0 → 7 F J = 1,2,3,4 transitions, resulting in the reddish-orange color under 395 nm of excitation wavelength. From the PL results, an optimized doping concentration of Eu 3+ ions was found to be at 8 mol%. The obtained cathodoluminescence spectra were similar to the PL spectra. The BGT:Eu 3+ phosphors can help to emit a natural white light for near-ultraviolet and visible excitation wavelengths based white light-emitting diodes.