YANG Zhi-ping, MA Shu-yuan, YU Hong-wei, WEN Jian-wei, LIU Yu-feng, LI Pan-lai. Synthesis and Luminescent Characteristics of Phosphor Ca<sub>4</sub> Y<sub>6</sub> O(SiO<sub>4</sub> )<sub>6</sub> ∶ Dy<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2011,32(2): 109-114
YANG Zhi-ping, MA Shu-yuan, YU Hong-wei, WEN Jian-wei, LIU Yu-feng, LI Pan-lai. Synthesis and Luminescent Characteristics of Phosphor Ca<sub>4</sub> Y<sub>6</sub> O(SiO<sub>4</sub> )<sub>6</sub> ∶ Dy<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2011,32(2): 109-114DOI:
Synthesis and Luminescent Characteristics of Phosphor Ca4 Y6 O(SiO4 )6 ∶ Dy3+
phosphor was synthesized by high temperature solid state reaction
and the luminescent properties were investigated. The XRD patterns indicated that the phosphor of Ca
4
Y
6
O(SiO
4
)
6
∶ Dy
3+
was pure crystalline phase. The study on the luminescent properties showed that the phosphor exhibits two emission bands centering at 480 nm and 573 nm. The excitation spectra for blue emission (480 nm) and yellow emission (573 nm) both have several sharp peaks
locating at 293
323
348
363
386
424
452 nm
which are assigned to the typical transitions of Dy
3+
. The strongest peak appears at 348 nm. The influence of the doped concentration of Dy
3+
on the ratio of yellow to blue emission intensity (
I
Y
/
I
B
)
with the emission color coordinates and color temperature of phosphor Ca
4
Y
6
O(SiO
4
)
6
∶ Dy
3+
were studied. The effect of Dy
3+
concentration on the luminescence and the quen-ching mechanism according to the Dexter theory were also analyzed.
关键词
Keywords
references
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