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1. 南昌大学 材料科学与工程学院,江西 南昌,330031
2. 南昌工程学院 理学院,江西 南昌,330099
纸质出版日期:2015-5-3,
网络出版日期:2015-4-2,
收稿日期:2014-12-14,
修回日期:2015-3-7,
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桂卫军, 王梓, 陈楠等. 不同退火温度下&alpha;-NaYF<sub>4</sub>:Eu<sup>3+</sup>红色荧光粉的合成与发光特性[J]. 发光学报, 2015,36(5): 502-507
GUI Wei-jun, WANG Zi, CHEN Nan etc. Synthesis and Luminescence Properties of &alpha;-NaYF<sub>4</sub>:Eu<sup>3+</sup> Red Phosphors Under Different Annealing Temperature[J]. Chinese Journal of Luminescence, 2015,36(5): 502-507
桂卫军, 王梓, 陈楠等. 不同退火温度下&alpha;-NaYF<sub>4</sub>:Eu<sup>3+</sup>红色荧光粉的合成与发光特性[J]. 发光学报, 2015,36(5): 502-507 DOI: 10.3788/fgxb20153605.0502.
GUI Wei-jun, WANG Zi, CHEN Nan etc. Synthesis and Luminescence Properties of &alpha;-NaYF<sub>4</sub>:Eu<sup>3+</sup> Red Phosphors Under Different Annealing Temperature[J]. Chinese Journal of Luminescence, 2015,36(5): 502-507 DOI: 10.3788/fgxb20153605.0502.
采用溶剂热法合成了-NaYF
4
:5%Eu
3+
红色荧光粉
研究不同退火温度对荧光粉晶体结构、形貌、发光以及显色性能 (CIE)的影响。通过比较退火前后以及不同退火温度下荧光粉的发光性能
发现退火使得禁戒跃迁
5
D
0
7
F
0
发生
随着退火温度的升高
Eu
3+
所有发射峰都得到了相应的增强
并且相应的CIE更趋向于红色;但在高温退火时
纳米晶之间的团聚更加严重
而且CIE趋向于红色的速度变慢。基于非对称性比率
的分析
认为本文中
5
D
0
7
F
0
跃迁是由于Eu
3+
占据非对称中心格位所致。
-NaYF
4
:5%Eu
3+
red phosphors were prepared by the solvothermal method. The crystal structure
morphology
luminescence properties and the chromaticity coordinates(CIE) were discussed under different annealing temperature
and three samples of them were coated with SiO
2
before annealed in air. It is found that the forbidden
5
D
0
7
F
0
transition emerges after annealing treatment
and all the characteristic emission peaks of Eu
3+
are enhanced with the increasing of annealing temperature
correspondingly the CIE turns to red. But the nanoparticles reunite each other under high annealing temperature
and the tendency of CIE turning to red is slower. Based on the results of asymmetric ratio
we consider the appearance of
5
D
0
7
F
0
transition is from Eu
3+
deviating from the inversion symmetry center.
溶剂热法&alpha-NaYF4纳米荧光粉退火发光
solvothermal method&alpha-NaYF4 nanocrystalannealingluminescence
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