Preparation, characterization and luminescence of Sm^(3+) or Eu^(3+) doped Sr_2CeO_4 by a modified sol-gel method  

作　　者：张春祥 史建设 杨绪杰 陆路德 汪信 

机构地区：[1]Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology

出　　处：《Journal of Rare Earths》2010年第4期513-518,共6页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (10776014);High-Tech Foundation of Jiangsu Province (BG2007047)

摘　　要：Superfine Sr2CeO4:RE3+ (RE=Eu, Sm) phosphors were synthesized at relatively low temperature by a modified sol-gel method using nitrates as raw materials, ethylenediaminetetraacetic acid (EDTA) as complexing agent. Single phase phosphors could be obtained at calcination temperature above 800 °C and pH value higher than 6.4 of initial solution. The as-prepared powders consisted of uniform crotch-like grains. The preparation process was monitored by thermogravimetric and differential thermal analysis (TG-DTA) ...Superfine Sr2CeO4:RE3+ (RE=Eu, Sm) phosphors were synthesized at relatively low temperature by a modified sol-gel method using nitrates as raw materials, ethylenediaminetetraacetic acid (EDTA) as complexing agent. Single phase phosphors could be obtained at calcination temperature above 800 °C and pH value higher than 6.4 of initial solution. The as-prepared powders consisted of uniform crotch-like grains. The preparation process was monitored by thermogravimetric and differential thermal analysis (TG-DTA) ...

关 键 词：inorganic compounds Sr2CeO4:RE3+ sol-gel chemistry LUMINESCENCE rare earths 

分 类 号：TB34[一般工业技术—材料科学与工程]