SONG Ming-jun, WANG Lin-tong, ZHANG Na-na etc. Preparation and Luminescent Properties of Near UV Excited KBaGd(MoO<sub>4</sub>)<sub>3</sub>: Dy<sup>3+</sup> Phosphors[J]. Chinese Journal of Luminescence, 2018,39(3): 259-265
SONG Ming-jun, WANG Lin-tong, ZHANG Na-na etc. Preparation and Luminescent Properties of Near UV Excited KBaGd(MoO<sub>4</sub>)<sub>3</sub>: Dy<sup>3+</sup> Phosphors[J]. Chinese Journal of Luminescence, 2018,39(3): 259-265 DOI: 10.3788/fgxb20183903.0259.
Preparation and Luminescent Properties of Near UV Excited KBaGd(MoO4)3: Dy3+ Phosphors
structure and spectral properties were investigated by means of SEM
XRD
excitation and luminescent spectra
as well as luminescent decay curves. The results show that the shape and the particle size distribution of samples synthesized by sol-gel method are more regular and narrower than those synthesized by solid state method. Under the excitation of near UV light (390 nm)
the samples exhibit two intensive emission bands around 485 nm and 577 nm
and the value of
B
/
Y
is about 0.7. In the host of KBaGd(MoO
4
)
3
the optimum mole fraction of Dy
3+
is 10%
and the concentration quenching effect is caused by dipole-dipole interactions between Dy
3+
ions. The luminescent lifetime becomes shorter and the decay curves become nonexponential with the increasing of Dy
3+
concentration.
关键词
Keywords
references
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