Luminescence Properties of Sr2SnO4：Sm^3＋ Afterglow Phosphor

作     者：雷炳富 乐松 张永哲 刘应亮 LEI Bing-Fu;YUE Song;ZHANG Yong-Zhe;LIU Ying-Liang

作者机构：Department of Physics 3inan University Guangzhou 510632 Department of Chemistry and Nanochemistry Institute Jinan University Guangzhou 510632 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2010年第27卷第3期

页      面：258-261页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0704[理学-天文学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 50872045  20671042 and 30670523 

主　　题：Condensed matter: electrical magnetic and optical Condensed matter: structural mechanical & thermal 

摘      要：A new long-lasting phosphorescence （LLP） phosphor, Sr2SnO4：Sm3＋ which emits reddish-orange LLP upon UV-excitation, is prepared by a conventional high-temperature solid-state method. After irradiation under 247-nm UV light, Sr2SnO4：Sm3＋ emits an intense reddish-orange emission afterglow from the 4G5/2 to 6HJ （J = 5/2,7/2,9/2） transitions. The afterglow decay curve of the Sm3＋-doped Sr2SnO4 phosphor contains a fast decay component and another slow decay one. Due to the presence of the slow decay component, the afterglow can be seen with the naked eye in the dark clearly for more than 1 h after removal of the excitation source.