Investigation on luminescence properties of Ln^(3+) doped Sr_3EuMgSi_2O_8 (Ln=Dy,Er,Ho)  

作　　者：李娜娜 胡义华 吴浩怡 陈丽 王小涓 

机构地区：[1]School of Physics and Optoelectronic Engineering,Guangdong University of Technology

出　　处：《Journal of Rare Earths》2012年第11期1079-1083,共5页稀土学报（英文版）

基　　金：supported by National Natural Science Foundation of China (21271049,21071034)

摘　　要：The luminescent properties of Sr2.97MgSi2O8：Eu^2＋0.1 phosphors were investigated with different Ln^3＋0.02（Ln^3＋： Dy^3＋, Er^3＋, Ho^3＋） co-dopants. The co-dopants had no influence on both the structure of the lattice and the position of the emission peak. However, the afterglow properties of samples were enhanced with different co-dopants. The afterglow duration of the Dy^3＋ co-doped sample was longer than that of the others. Furthermore, the co-doping samples had stronger thennolmninescence （TL） intensity and therefore longer afterglow duration. At last, the self-reduction of Eu^3＋→Eu^2＋ was observed in an silicate compound of Sr3 xMgSi2Os：xEu phosphor in air condition. This is the first time to show a blue long afterglow phosphor synthesized avoiding reducing atmosphere.The luminescent properties of Sr2.97MgSi2O8：Eu^2＋0.1 phosphors were investigated with different Ln^3＋0.02（Ln^3＋： Dy^3＋, Er^3＋, Ho^3＋） co-dopants. The co-dopants had no influence on both the structure of the lattice and the position of the emission peak. However, the afterglow properties of samples were enhanced with different co-dopants. The afterglow duration of the Dy^3＋ co-doped sample was longer than that of the others. Furthermore, the co-doping samples had stronger thennolmninescence （TL） intensity and therefore longer afterglow duration. At last, the self-reduction of Eu^3＋→Eu^2＋ was observed in an silicate compound of Sr3 xMgSi2Os：xEu phosphor in air condition. This is the first time to show a blue long afterglow phosphor synthesized avoiding reducing atmosphere.

关 键 词：afterglow phosphors Eu^3＋ and Ln^3＋ co-dopants Sr2.97MgSi2Os rare earths 

分 类 号：O614.33[理学—无机化学]