(Eu^(2+),Nd^(3+))∶CaAl_2O_4的长余辉发光及机理的研究  

Characteristics and Mechanism of (Eu^(2+),Nd^(3+))∶CaAl_2O_4 Long Afterglow

作　　者：孟宪国[1] 王永生[1] 孙力[1] 何志毅[1] 邓朝勇[1] 李海玲[1] 

机构地区：[1]北方交通大学光电子技术研究所,信息存储,显示与材料开放实验室,北京100044

出　　处：《光学学报》2003年第3期356-360,共5页Acta Optica Sinica

基　　金：国家自然科学基金 (19874 0 0 1)资助课题

摘　　要：采用高温固相反应法制备了Eu2 + ∶CaAl2 O4、(Eu2 + ,Nd3 + )∶CaAl2 O4,等系列材料。测量了其激发、发射光谱及余辉衰减曲线。分析了掺杂稀土离子对长余辉发光的作用。并对其发光机理进行了深入地探讨。A series of materials such as Eu 2+ ∶CaAl 2O 4:, (Eu 2+ ,Nd 3+ )∶CaAl 2O 4 were developed by using high temperature solid state reaction. The excitation, photoluminescence and afterglow spectra as well as the curve of afterglow decay were investigated. The role of doped rear earth ions and the long afterglow mechanism of this kind of phosphor are discussed.

关 键 词：发光学 长余辉发光 稀土离子 电子俘获 EU^2+ 

分 类 号：O482.1[理学—固体物理]