1. Yellow Emission Obtained by Combination of Broadband Emission and Multi-Peak Emission in Garnet Structure Na 2 YMg 2 V 3 O 12 : Dy 3+ Phosphor.
- Author
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Zhang W, He C, Wu X, Huang X, Lin F, Liu Y, Fang M, Min X, and Huang Z
- Subjects
- Dysprosium chemistry, Luminescence, Luminescent Agents chemistry, Magnesium chemistry, Oxides chemistry, Sodium chemistry, Vanadium chemistry
- Abstract
The fabrication and luminescent performance of novel phosphors Na
2 YMg2 V3 O12 :Dy3+ were investigated by a conventional solid-state reaction method. Under near-UV light, the Na2 YMg2 V3 O12 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 Na2 YMg2 V3 O12 :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 Na2 YMg2 V3 O12 :Dy3+ phosphors remained stable at high temperatures. The obtained phosphors, commercial Y2 O3 :Eu3+ red phosphors, and BaMgAl10 O17 :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 Na2 YMg2 V3 O12 :Dy3+ phosphor as a yellow-emitting phosphor in solid-state illumination.- Published
- 2020
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