A series of novel Ba₃Lu₄O₉:Dy³⁺ white-light-emitting phosphors were synthesized via the conventional solid-state reaction, and their phase purity and luminescence properties were investigated in detail. The results revealed that all the samples could be excited effectively by near-ultraviolet light, and three prominent emission bands centered at 491 nm, 580 nm and 673 nm were observed. The emission intensity of the as-synthesized phosphor at 423 K remained about 88.3% of that at 298 K. The Ba₃Lu_3.84O₉:0.16Dy³⁺ phosphor possessed a warm-white emission and low CCT of 3730 K. All the results indicated that the phosphors were promising candidates for warm-white LEDs.

通过常规的固相反应合成了一系列新型的Ba ₃ Lu ₄ O ₉：Dy ³⁺白色发光荧光粉，并对其相纯度和发光性能进行了详细的研究。结果表明，所有样品均可被近紫外光有效激发，并观察到三个集中在491 nm，580 nm和673 nm处的显着发射带。合成后的磷光体在423 K时的发射强度仍约为在298 K时的发射强度的88.3％。Ba ₃ Lu _3.84 O ₉：0.16Dy ³⁺ 该荧光粉具有暖白色发射和3730 K的低CCT。所有结果表明，该荧光粉是暖白色LED的有希望的候选者。