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Si,Lu掺杂Ca0.8Zn0.2TiO3:Pr3+荧光粉的光学性能改善
Improved Luminescence Properties of Ca0.8Zn0.2TiO3:Pr3+ Phosphors Doped with Si and Lu
- 发光学报 2018年39卷第5期 页码：643-652
- 作者机构：
湖南师范大学化学化工学院 资源精细化与先进材料湖南省高校重点实验室,湖南 长沙,410081
- 作者简介：
- 基金信息：国家自然科学基金（21471055）();湖南省自然科学基金（12JJ2029）资助项目()
DOI：10.3788/fgxb20183905.0643
中图分类号： O482.31纸质出版日期：2018-5-5，
网络出版日期：2017-11-23，
收稿日期：2017-8-18，
修回日期：2017-10-24，
扫 描 看 全 文
李金银, 彭志雄, 余丽萍等. Si,Lu掺杂Ca<sub>0.8</sub>Zn<sub>0.2</sub>TiO<sub>3</sub>:Pr<sup>3+</sup>荧光粉的光学性能改善[J]. 发光学报, 2018,39(5): 643-652
LI Jin-yin, PENG Zhi-xiong, YU Li-ping etc. Improved Luminescence Properties of Ca<sub>0.8</sub>Zn<sub>0.2</sub>TiO<sub>3</sub>:Pr<sup>3+</sup> Phosphors Doped with Si and Lu[J]. Chinese Journal of Luminescence, 2018,39(5): 643-652
李金银, 彭志雄, 余丽萍等. Si,Lu掺杂Ca<sub>0.8</sub>Zn<sub>0.2</sub>TiO<sub>3</sub>:Pr<sup>3+</sup>荧光粉的光学性能改善[J]. 发光学报, 2018,39(5): 643-652 DOI： 10.3788/fgxb20183905.0643.
LI Jin-yin, PENG Zhi-xiong, YU Li-ping etc. Improved Luminescence Properties of Ca<sub>0.8</sub>Zn<sub>0.2</sub>TiO<sub>3</sub>:Pr<sup>3+</sup> Phosphors Doped with Si and Lu[J]. Chinese Journal of Luminescence, 2018,39(5): 643-652 DOI： 10.3788/fgxb20183905.0643.
摘要
采用高温固相法合成Ca
0.8
Zn
0.2
TiO
3
：0.2% Pr
3+
，Si
4+
和Ca
0.8
Zn
0.2
TiO
3
：0.2% Pr
3+
，Si
4+
，Lu
3+
荧光粉。通过X射线衍射仪、电子顺磁共振光谱仪、显微拉曼光谱仪和荧光光谱仪等表征了该系列荧光粉的物相组成、微观结构和发光性质。结果表明，以-Si
3
N
4
为硅源制备的荧光粉具有最佳的光学性能。加入ZnO后，荧光粉由CaTiO
3
、Zn
2
TiO
4
和Ca
2
Zn
4
Ti
16
O
38
三相组成，其中CaTiO
3
为主相。电子顺磁共振谱证实了Pr
4+
存在，Lu
3+
的添加使[Pr
4+
Ti
3+
O
3
]
+
簇显著增加，电子顺磁共振谱和拉曼光谱均证实Si
4+
、Lu
3+
的掺杂使局部TiO
6
簇对称性提高，有利于Pr
3+
发光中心的能量传递。在336 nm激发下，荧光粉展示了很强的位于612 nm的红光发射（归属于Pr
3+
的
1
D
2
3
H
4
跃迁）及理想的红光色坐标（x=0.670，y=0.330）。Si
4+
和Lu
3+
的添加显著增强了370 nm激发下红光发射，Ca
0.8
Zn
0.2
TiO
3
：0.2% Pr
3+
，3.2% Si
4+
荧光粉的余辉寿命最长。
Abstract
Ca
0.8
Zn
0.2
TiO
3
:0.2%Pr
3+
Si
4+
and Ca
0.8
Zn
0.2
TiO
3
:0.2%Pr
3+
Si
4+
Lu
3+
phosphors were synthesized by high temperature solid-state method. Crystalline phase
microstructure and luminescence properties of phosphors were characterized with X-ray diffractometer (XRD)
electron paramagnetic resonance spectrometer (EPR)
microscopic Raman spectrometer and photoluminescence spectrometer
respectively. The results show that phosphor prepared using -Si
3
N
4
as Si source has the optimal luminescence properties. Phosphors with the addition of ZnO were confirmed to be constituted of CaTiO
3
Zn
2
TiO
4
and Ca
2
Zn
4
Ti
16
O
38
and CaTiO
3
is major phase. EPR spectra confirm that the presence of Pr
4+
and[Pr
4+
Ti
3+
O
3
]
+
clusters remarkably increase with the Lu
3+
addition. Increasing local symmetry of TiO
6
clusters with the addition of Si
4+
and Lu
3+
is verified by EPR and Raman spectra
which is beneficial for the energy transfer of luminescent center Pr
3+
. The obtained phosphor exhibited the intense red emission centered at 612 nm (originated from
1
D
2
3
H
4
transition of Pr
3+
) with an ideal chromaticity coordinate located at (x=0.670
y=0.330) under 336 nm excitation. Red emission excited by 370 nm remarkably increases with the addition of Si
4+
and Lu
3+
. The synthetic Ca
0.8
Zn
0.2
TiO
3
:0.2%Pr
3+
3.2%Si
4+
phosphor has the longest average lifetime.
关键词
Ca0.8Zn0.2TiO3:Pr3+&beta-Si3N4Lu3+掺杂红色长余辉
Keywords
Ca0.8Zn0.2TiO3:Pr3+&beta-Si3N4Lu3+ dopedred long persistence
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