掺杂RE^(3+)对CaAl_2O_4:Eu^(2+),Nd^(3+)发光性能的影响  

THE INFLUENCE OF RE DOPANT ON THE LUMINESCENT PROPERTIES OF CaAl_2O_4∶Eu^(2+),Nd^(3+)

作　　者：储召华[1] 郝桂霞[1] 

机构地区：[1]韩山师范学院化学系,潮州521041

出　　处：《中国陶瓷》2012年第7期27-29,38,共4页China Ceramics

基　　金：韩山师范学院科研团队项目(LT201103)

摘　　要：以燃烧法合成了CaAl2O4∶Eu2+,Nd3+,RE3+紫色长余辉发光材料。实验结果表明,掺杂辅助激活剂Pr3+和Ce3+对CaAl2O4∶Eu2+,Nd3+磷光体发光性能有明显影响。掺杂Pr3+的CaAl2O4∶Eu2+,Nd3+样品的发射峰蓝移;掺杂Ce3+的CaAl2O4∶Eu2+,Nd3+样品的发射峰红移。Pr3+或Ce3+掺杂,可以提高CaAl2O4∶Eu2+,Nd3+磷光体的初始亮度,Pr3+或Ce3+在其中起到增加陷阱密度,提高发光亮度的作用。Eu^2＋、Nd^3＋ and RE3＋ doped calcium aluminate phosphors with high brightness and purple long afterglow are synthesized by combustion method.The experimental results showed that assistant activator Pr^3＋ and Ce^3＋ dopant has significant effect on the persistent luminesce CaAl2O4∶Eu^2＋,Nd^3＋ phosphors.The emission peaks of CaAl2O4∶Eu^2＋,Nd^3＋ samples doping Pr^3＋ were blue-shifted,and ones of CaAl2O4∶Eu^2＋,Nd^3＋ samples doping Ce^3＋ red shifted.Pr^3＋ or Ce^3＋ dopant could increase the initial brightness of CaAl2O4∶Eu^2＋,Nd^3＋ phosphors,and they may play the role of enhancing the trap density and improving luminescent strength in it.

关 键 词：CaAl2O4∶Eu2+ Nd3+ 燃烧法 长余辉发光 辅助激活剂 

分 类 号：O614.342[理学—无机化学]