JIN Ye, CHEN Yuan-hao, LIU Hao-wen etc. Synthesis and Luminescence Properties of Red Phosphor Na<sub>8.33</sub>La<sub>1.67</sub>(SiO<sub>4</sub>)<sub>6</sub>O<sub>2</sub>: Eu<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2019,40(2): 159-163
JIN Ye, CHEN Yuan-hao, LIU Hao-wen etc. Synthesis and Luminescence Properties of Red Phosphor Na<sub>8.33</sub>La<sub>1.67</sub>(SiO<sub>4</sub>)<sub>6</sub>O<sub>2</sub>: Eu<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2019,40(2): 159-163 DOI: 10.3788/fgxb20194002.0159.
Synthesis and Luminescence Properties of Red Phosphor Na8.33La1.67(SiO4)6O2: Eu3+
have been synthesized by solid stated method. The crystal structure has been detected by X-ray diffractometer and the photoluminescence properties have been obtained on Hitachi F4600. Under UV excitation
the emission of Na
8.33
La
1.67
-(SiO
4
)
6
O
2
:Eu
3+
cover some sharp lines corresponding to the transitions of
5
D
0
-
7
F
j
(
j
=0
1
2
3
4)
with the highest intensity at 615 nm ascribed to the transition of
5
D
0
-
7
F
2
. Moreover
the emission intensity changes with the concentration of Eu
3+
. As the concentration is 15%
the optimal emission is obtained
which is concentration quenching. The phenomenon is due to the energy migration between Eu
3+
ions. And the interaction mechanism between Eu
3+
ions is calculated
which is exchange interaction.
关键词
Keywords
references
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