柠檬酸凝胶法制备超细多色稀土-萤光材料Sr_2CeO_4/Re(Re=Pr,Nd,Eu)  

Preparation of ultrafine multicolored fluorescent materials Sr_2CeO_4/Re(Re=Pr,Nd,Eu) by citrate-gel method

作　　者：陈巧平[1] 高峰[2] 谢鸿芳[1] 肖艳春[1] 陈震[1,2] 

机构地区：[1]宁德师范学院化学与环境科学系,福建宁德352100 [2]福建师范大学化学与材料学院,福建福州350007

出　　处：《功能材料》2010年第A03期492-495,共4页Journal of Functional Materials

基　　金：福建省发展改革委员会资助项目(2008762)

摘　　要：以柠檬酸为络合剂、乙二醇为稳定剂,在高温固相合成的Sr2CeO4中掺杂稀土元素Nd,Pr,Eu制备了Sr2CeO4/Re(Re=Nd,Pr,Eu)萤光材料。以SEM、XRD、萤光光谱等方法对其进行表征。Sr2CeO4/Re具有宽带的吸收和发射荧光光谱。紫外光能有效地激发其纳米荧光粉体,粒径大约分布在1～2μm之间,分散性较好,且具有从紫外到蓝绿光波段能量的吸收范围。激发光谱为300～480nm。该材料的发光强度大,发射主峰位于475nm。Luminescent powders of Sr2CeO4/Re doped with rare-earth elements Nd, Pr and Eu were synthesized by citrate-gel method. The samples were characterized by X-ray diffraction, fluorescence spectrometer analysis and the spectrophotometer analysis. The synthesized materials Sr2CeO4/Re shows excellent luminescence properties, such as broadband emission and excitation spectra. The excitation spectra is from 300 to 480nm and the main emission peak is at 475nm. The size is as small as 1-2μm diameter.

关 键 词：发光材料 稀土元素 柠檬酸盐溶胶法 SR2CEO4 

分 类 号：TG146.45[一般工业技术—材料科学与工程]