摘要
In order to study the spectroscopic properties of vacancies and trap levels in Lu3Al5O12:Ce 3+(LuAG:Ce 3+)crystal,the <111>-oriented LuAG:Ce3 +crystal grown in pure nitrogen atmosphere by Czochralski method was annealed in oxidizing atmosphere (air)and reducing atmosphere(H2+N2),respectively.The excitation and emission spectra of LuAG-Ce 3+ 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:Ce 3+crystal are effectively eliminated through the annealing treatment in air and four trap levels are observed in as-grown LuAG:Ce 3+ crystal with temperature position peaking at 110,210,325 and 475℃,respectively.
In order to study the spectroscopic properties of vacancies and trap levels in Lu3Al5O12：Ce^3＋ （LuAG：Ce^3＋） crystal, the （111）-oriented LuAG：Ce^3＋ crystal grown in pure nitrogen atmosphere by Czochralski method was annealed in oxidizing atmosphere （air） and reducing atmosphere （H2＋N2）, respectively. The excitation and emission spectra of LuAG：Ce^3＋ crystal after different thermal annealing treatments were measured in the temperature range of 8-450 K, and the thermally stimulated luminescence curves of LuAG：Ce^3＋ crystal were characterized. It is found that the oxygen vacancies in LuAG：Ce^3＋ crystal are effectively eliminated through the annealing treatment in air and four trap levels are observed in as-grown LuAG：Ce^3＋ crystal with temperature position peaking at 110, 210, 325 and 475 ℃, respectively.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2009年第6期1628-1633,共6页
Transactions of Nonferrous Metals Society of China
基金
Project(2006B14801001)supported by the Science and Technology Program of Guangdong Province,China
Project(20080440804)supported by China Postdoctoral Science Foundation
Project(KF0810)supported by the Open Foundation from the State Key Laboratory of Crystal Materials,China
