Spectroscopic properties of vacancies and trap levels in Lu3Al5O12:Ce3+ crystals

被引：11
作者：
Zhong Jiu-ping [1 ]
Liang Hong-bin [1 ]
Su Qiang [1 ]
Zhou Jian-ying [1 ]
Wang Ji-yang [2 ]
机构：
[1] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
[2] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2009年 / 19卷 / 06期
基金：
中国博士后科学基金;
关键词：
Lu3Al5O12:Ce3+ crystal; oxygen vacancy; thermoluminescence; DEFECTS CREATION; ELECTRON TRAPS; SCINTILLATORS; LUMINESCENCE; PEROVSKITES; YALO3-CE; LUALO3-CE; ALUMINUM; GARNETS;
D O I：
10.1016/S1003-6326(09)60080-7
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In order to study the spectroscopic properties of vacancies and trap levels in Lu3Al5O12:Ce3+ (LuAG:Ce3+) crystal, the < 111 >-oriented LuAG:Ce3+ crystal grown in pure nitrogen atmosphere by Czochralski method was annealed in oxidizing atmosphere (air) and reducing atmosphere (H-2+N-2), respectively. The excitation and emission spectra of LuAG:Ce3+ crystal after different thermal annealing treatments were measured in the temperature range of 8-450 K, and the thermally stimulated luminescence curves of LuAG:Ce3+ crystal were characterized. It is found that the oxygen vacancies in LuAG:Ce3+ crystal are effectively eliminated through the annealing treatment in air and four trap levels are observed in as-grown LuAG:Ce3+ crystal with temperature position peaking at 110, 210, 325 and 475 degrees C, respectively.
引用
收藏
页码：1628 / 1633
页数：6
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