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Pr3+ 掺杂透明氟氧化物玻璃陶瓷的光谱特性
Spectroscopic Properties of Pr3+ Doped Transparent Oxyfluoride Glass Ceramic
- 发光学报 2009年30卷第2期 页码：135-141
- 作者机构：
1. 中国科学院长春光学精密机械与物理研究所激发态物理重点实验室,吉林 长春,130022
2. 中国科学院研究生院 北京,100049
3. 新加坡国立大学 物理系 新加坡,117542
4. 南乔治亚大学 物理系, 乔治亚州,美国,30460
5. 南洋理工大学 数学物理学院物理系 新加坡,637371
- 作者简介：
- 基金信息：
DOI：
中图分类号： O482.31纸质出版日期：2009-4-30，
网络出版日期：2009-4-30，
收稿日期：2008-8-25，
修回日期：1900-1-2，
扫 描 看 全 文
王英英, 倪振华, 王笑军, 等. Pr3+ 掺杂透明氟氧化物玻璃陶瓷的光谱特性[J]. 发光学报, 2009,30(2):135-141.
WANG Ying-ying, NI Zhen-hua, WANG Xiao-jun, et al. Spectroscopic Properties of Pr3+ Doped Transparent Oxyfluoride Glass Ceramic[J]. Chinese Journal of Luminescence, 2009,30(2):135-141.
摘要
用不同的激发波长532
514.5
476.5 nm
研究稀土Pr
3+
掺杂的透明氟氧化物玻璃陶瓷中Pr
3+
在LaF
3
微晶环境和玻璃环境中的不同的荧光行为。对于微晶中的Pr
3+
离子
当用532 nm 和514.5 nm激发玻璃陶瓷时
观察到从
3
P
0
能级到
3
H
5
能级的发射
和
1
D
2
能级到基态
3
H
4
能级
3
P
0
能级到
3
H
6
能级的发射。我们认为微晶中Pr
3+
离子的
3
P
0
能级上的电子布局是依靠电声子耦合-多声子辅助来实现的。为了进行比较
用476.5 nm 共振激发玻璃及微晶中Pr
3+
离子的
3
P
0
能级
观察到
3
P
0
能级到很多低能级如:
3
H
5
、
3
H
6
、
3
F
2
的跃迁。而当在532 nm 和514.5 nm 非选择激发时
只有
3
P
0
能级到
3
H
5
能级的发射存在。我们认为这是由于不同的激光波长选择激发了不同环境中的Pr
3+
离子
532 nm 和514.5 nm 激发线选择激发了电声子耦合环境强中Pr
3+
离子。不同Pr
3+
离子掺杂摩尔分数分别为0.005%
0.05%
0.5%的发射光谱的研究还表明
这些电声子耦合环境强中的Pr
3+
离子浓度很高
很容易发生浓度猝灭现象。最后
用拉曼光谱研究了这类玻璃陶瓷的结晶性为和振动特性。
Abstract
In this paper
we reported the spectroscopic properties of praseodymium ions (Pr
3+
) doped transparent oxyfluoride glass ceramic excited with different laser lines
such as 532
514.5 and 476.5 nm. and the spectroscopic features of Pr
3+
ions in LaF
3
nanocrystals (NCs) and in oxide glass were presented. It was found that the population on
3
P
0
state of Pr
3+
ion in NCs and in glass can be achieved by multi-phonon assistance process when excited by 514.5 nm laser lines. As a comparison
476.5 nm laser line which is mainly resonant with the
3
H
4
to
3
P
0
transition of Pr
3+
ions in NCs is used as the excitation source
transitions from
3
P
0
state to many lower states
such as
3
H
5
3
H
6
3
F
2
manifolds were observed and it showed significant difference from those excited by 532 nm and 514.5 nm laser lines in which only transition from
3
P
0
to
3
H
5
exists. We attribute those different spectroscopic features as selectively excitation of Pr
3+
ions in different environments where exist strong/weak electron-phonon coupling in the
3
P
0
1
states of Pr
3+
ion in NCs and in glass. Crystallization behavior and vibrational properties of transparent glass ceramic were also stu-died by Raman spectroscopy excited by 532 nm and 514.5 nm laser lines.
关键词
透明氟氧化物玻璃陶瓷镨离子纳米晶
Keywords
transparent oxyfluoride glass ceramicpraseodymiumnanocrystals
references
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