Synthesis and luminescence properties of Tb3+/Eu3+ co-doped GdAlO3 phosphors with enhanced red emission

The luminescent properties of the (Gd0.92Eu0.05Tb0.03)AlO3 phosphors were superior to the single Eu3+ doped sample (Gd0.95Eu0.05)AlO3 due to the efficient Tb3+ → Eu3+ energy transfer. The phosphor possessed good thermal stability. All the GdAP:Tb/Eu phosphors with vivid red color have similar CIE chromaticity coordinates and color temperatures.353