NING Hong-yu, CHENG Zhi-yuan, DONG Chao etc. Synthesis and Luminescence of &alpha;-Ba<sub>3</sub>Y(BO<sub>3</sub>)<sub>3</sub>:Dy<sup>3+</sup> Phosphors[J]. Chinese Journal of Luminescence, 2018,39(8): 1087-1094
NING Hong-yu, CHENG Zhi-yuan, DONG Chao etc. Synthesis and Luminescence of &alpha;-Ba<sub>3</sub>Y(BO<sub>3</sub>)<sub>3</sub>:Dy<sup>3+</sup> Phosphors[J]. Chinese Journal of Luminescence, 2018,39(8): 1087-1094 DOI: 10.3788/fgxb20183908.1087.
Synthesis and Luminescence of α-Ba3Y(BO3)3:Dy3+ Phosphors
have been synthesized via conventional solid-state method and characterized. Fluorescence spectra (FL) show that the as-synthesized phosphors mainly exhibit two dominating emission peaks at 488 and 577 nm corresponding to the transitions from
4
F
9/2
to
6
H
15/2
and
6
H
13/2
respectively under ultraviolet (UV) or blue radiation. The best synthesis temperature is 1 100℃
leading to the most intensive luminescence
pure phase and most sufficient crystal growth ensured by FL
X-ray diffraction (XRD) and scanning electron microscope (SEM)
respectively. The concentration quenching mechanism has been determined to be mainly dipole-dipole interaction and exchange interaction is not negligible due to the specific unit cell structure; the critical concentration is 0.07. The second-order exponential lifetime decay curves are observed and its origin related to the specific unit cell structure is discussed. The as-synthesized phosphor has potential application for pc-WLEDs in the lighting field.
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references
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