Synthesis and luminescence properties of Eu3+ doped BaGd2Ti4O13 phosphors

• Novel BaGd2Ti4O13 (BGT):Eu3+ phosphors were synthesized by a sol–gel method.
• PL and CL spectra showed the dominant emissions due to 5D0 → 7F1, 7F2 transitions.
• These spectra showed the same CIE values which fall in the reddish-orange region.

We synthesized the trivalent europium ions (Eu3+) doped BaGd2Ti4O13 (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:Eu3+ phosphors exhibited 5D0 → 7FJ = 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 Eu3+ ions was found to be at 8 mol%. The obtained cathodoluminescence spectra were similar to the PL spectra. The BGT:Eu3+ phosphors can help to emit a natural white light for near-ultraviolet and visible excitation wavelengths based white light-emitting diodes.

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