LI Zhong-yuan, LI Yong, XIA Ai-lin. Synthesis and Luminescent Properties of Eu<sup>3+</sup> Doped Na<sub>2</sub>YMg<sub>2</sub> (VO<sub>4</sub>)<sub>3</sub> Phosphors[J]. Chinese Journal of Luminescence, 2017,38(3): 296-302
LI Zhong-yuan, LI Yong, XIA Ai-lin. Synthesis and Luminescent Properties of Eu<sup>3+</sup> Doped Na<sub>2</sub>YMg<sub>2</sub> (VO<sub>4</sub>)<sub>3</sub> Phosphors[J]. Chinese Journal of Luminescence, 2017,38(3): 296-302 DOI: 10.3788/fgxb20173803.0296.
Synthesis and Luminescent Properties of Eu3+ Doped Na2YMg2 (VO4)3 Phosphors
=0.15-0.75) were prepared by sol-gel method. The phase formation
surface morphology and luminescence properties of the samples were verified by XRD
SEM
photoluminescence spectra and decay curves. It is found that the obtained samples are pure crystalline phases with garnet structure. The particles with a diameter ranging from 0.3 to 1 m show irregular shapes and have a tendency to be agglomerating. This host can be excited by ultraviolet (UV) light
and it exhibits a broad-band green emission in the region from 400 to 700 nm
ascribing to the charge transfer of VO
4
3-
groups. Na
2
YMg
2
(VO
4
)
3
:Eu
3+
phosphors show both characteristic broad-band emission from VO
4
3-
groups and sharp emissions from Eu
3+
ions upon 340 nm UV light. Moreover
the intensities of host and Eu
3+
emission depend on the doping concentration of Eu
3+
. The energy transfer from VO
4
3-
to Eu
3+
was discussed based on spectrum analysis and decay curves.
关键词
Keywords
references
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