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

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 (H2+N2),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 ℃,respectively.

关键词： Lu3Al5O12-Ce3+ crystal ozygen vacancy thermoluminescence

作者: ZHONG Jiu-ping LIANG Hong-bin SU Qiang ZHOU Jian-ying WANG Ji-yang

作者单位: State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University,Guangzhou 5 State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China

会议类型: 国际会议

会议名称: 2009 Frontier Symposium of China Postductors on Materrials Science(2009年中国博士后材料科学前言论坛)

会议地点: 长沙

会议语种:英文

页码: 1628-1633

在线出版日期: 2009-11-22（万方平台首次上网日期，不代表论文的发表时间）