WU Jiang, ZHANG Ping, JIANG Chun-dong etc. Preparation and Luminescence Properties of Reddish-orange Phosphors Ca<sub>3</sub>Y<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>:Sm<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2014,35(7): 772-776
WU Jiang, ZHANG Ping, JIANG Chun-dong etc. Preparation and Luminescence Properties of Reddish-orange Phosphors Ca<sub>3</sub>Y<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>:Sm<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2014,35(7): 772-776 DOI: 10.3788/fgxb20143507.0772.
Preparation and Luminescence Properties of Reddish-orange Phosphors Ca3Y2Si3O12:Sm3+
phosphors were synthesized by the high temperature solid-state method at
1
400 ℃
and the effects of Sm
3+
ion doping concentration and fluxes on the luminescence property of the phosphors were studied. The principal crystalline phase of the samples is Ca
3
Y
2
Si
3
O
12
. Ca
3
Y
2
Si
3
O
12
:Sm
3+
silicate phosphors can be effectively excited in the range of 320~500 nm
and emit reddish-orange light. Excited by 402 nm
the emission peaks mainly locate at 562 nm (
4
G
5/2
6
H
5/2
)
598 nm (
4
G
5/2
6
H
7/2
)
and 646 nm (
4
G
5/2
6
H
9/2
)
The peak locating at 598 nm is the maximum. With the increasing of the doping concentration of Sm
3+
the emission intensity of the phosphors increases firstly and then decreases. The optimum doping content of Sm
3+
is
x
(Sm
3+
)=5%. The concentration quenching mechanism is the interaction among ions. The influence of several kinds of fluxes was discussed also. The emission intensities all decrease by adding a certain amount of NH
4
F
CaF
2
NaCl
but increase significantly by adding H
3
BO
3
with the optimum doping mass fraction of 1%.
关键词
Keywords
references
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