The fabrication and luminescent performance of novel phosphors Na2YMg2V3O12:Dy3+ were investigated by a conventional solid-state reaction method. Under near-UV light, the Na2YMg2V3O12 host self-activated and released a broad emission band (400–700 nm, with a peak at 524 nm) ascribable to charge transfer in the (VO4)3− groups. Meanwhile, the Na2YMg2V3O12:Dy3+ phosphors emitted bright yellow light within both the broad emission band of the (VO4)3- groups and the sharp peaks of the Dy3+ ions at 490, 582, and 663 nm at a quenching concentration of 0.03 mol. The emission of the as-prepared Na2YMg2V3O12:Dy3+ phosphors remained stable at high temperatures. The obtained phosphors, commercial Y2O3:Eu3+ red phosphors, and BaMgAl10O17:Eu2+ blue phosphors were packed into a white light-emitting diode (WLED) device with a near-UV chip. The designed WLED emitted bright white light with good chromaticity coordinates (0.331, 0.361), satisfactory color rendering index (80.2), and proper correlation to a color temperature (7364 K). These results indicate the potential utility of Na2YMg2V3O12:Dy3+ phosphor as a yellow-emitting phosphor in solid-state illumination.

中文翻译：

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石榴石结构Na2YMg2V3O12：Dy3+磷光体中宽带发射和多峰发射相结合得到的黄色发射

通过常规固态反应方法研究了新型荧光粉 Na2YMg2V3O12:Dy3+ 的制备和发光性能。在近紫外光下，Na2YMg2V3O12 主体自激活并释放宽发射带（400-700 nm，峰值在 524 nm），归因于 (VO4)3− 基团中的电荷转移。同时，Na2YMg2V3O12:Dy3+ 荧光粉在 (VO4)3- 基团的宽发射带和 Dy3+ 离子在 490、582 和 663 nm 处的尖峰中发出亮黄色光，猝灭浓度为 0.03 mol。所制备的 Na2YMg2V3O12:Dy3+ 荧光粉的发射在高温下保持稳定。将获得的荧光粉、商用 Y2O3:Eu3+ 红色荧光粉和 BaMgAl10O17:Eu2+ 蓝色荧光粉装入具有近紫外芯片的白色发光二极管 (WLED) 器件中。设计的 WLED 发出明亮的白光，具有良好的色度坐标 (0.331, 0.361)、令人满意的显色指数 (80.2) 以及与色温 (7364 K) 的适当相关性。这些结果表明 Na2YMg2V3O12:Dy3+ 磷光体在固态照明中作为黄色发光磷光体的潜在效用。