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中国科学院长春应用化学研究所, 稀土化学和物理开放研究室 长春,130022
Published:30 May 1999,
Received:24 January 1999,
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ZHANG TIANZHI, SU QIANG, WANG SHUBIN. LUMINESCENT PROPERTIES OF MAl2O4:Eu2+、RE3+. [J]. Chinese journal of luminescence, 1999, 20(2): 170-175.
DOI:
ZHANG TIANZHI, SU QIANG, WANG SHUBIN. LUMINESCENT PROPERTIES OF MAl2O4:Eu2+、RE3+. [J]. Chinese journal of luminescence, 1999, 20(2): 170-175. DOI:
研究鳞石英结构碱土铝酸盐MAl
2
O
4
:Eu
2+
、RE
3+
(M=Mg
Ca
Sr
Ba;RE=Y
La
Ce
Pr
Nd
Sm
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu)的荧光及长余辉发光性质。其发光由Eu
的4f-5d跃迁产生。RE
作为辅助激活离子
提供合适的陷阱能级。即使用RE
的特征波长激发
在MAl
的发光中也观察不到RE
的发光。基于其荧光
热释光
X-射线
红外光谱等实验结果
分析这一结构对稀土发光的影响
并总结其发光规律.
The luminescent and long phosphorescent properties of MAl
(
M
=Mg
Lu) with distorted stuffed tridymite were researched. The luminescence attributed to the 4f 5d transition of Eu
. The incorporation ofRE
ion into the MAl
system was as the auxiliary activator which provided the proper trapping levels. We could not see the luminescence ofRE
though excited with the characteristic excitation wavelength of RE
. We analysed the luminescent and long phosphorescent properties of this type of host codoped with rare earths
and made the conclusion that Pr
Er could effectively prolong the life time of MAl
system. The long phosphorescent rule is Sr
>
Ba.
稀土荧光热释发光长余辉陷阱
rare earthphosphorescencethermoluminescencelong phosphorescencetraps
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