基于KMgF_3:Re(Re=Eu,Ce)纳米材料的光谱测试及分析  

Testing and Analysis of Fluorescence Based on KMgF_3:Re(Re=Eu,Ce)Nanoparticles

作　　者：白玉琴[1] 

机构地区：[1]吉林师范大学辽源分院,辽源136200

出　　处：《长春理工大学学报（自然科学版）》2010年第2期82-85,98,共5页Journal of Changchun University of Science and Technology(Natural Science Edition)

摘　　要：以十六烷基三甲基溴化铵/正丁醇/正辛烷/水微乳体系制备出KMgF3,KMgF3:Eu和KMgF3:Ce纳米微粒。对样品进行了IR测试,观察其杂质情况;运用XRD确认了制备所得样品为KMgF3立方晶系,由谢乐(Debye-Sche-rrer)公式d=0.89/Bcos计算颗粒平均尺寸约为20nm^25nm;制备所得的KMgF3:Eu2+纳米粒子的尖峰发射位于360nm,而KMgF3:Eu2+纳米粒子宽带激发峰最大值位于250nm,与体相的多晶粉末和单晶相比分别蓝移了62nm和80nm;对纳米KMgF3:Ce的光谱性质进行了讨论,KMgF3:Ce纳米粒子的发射带最大峰值位于330nm,激发带最大峰值位于260nm附近。Nanoparticles of KMgF3,KMgF3：Eu and KMgF3：Ce were prepared from the quaternary microemulsions of CTAB,n-butanol,n-octane and water based on the pseudo-ternary phase diagrams.IR showed the impurities in the samples.The X-ray diffraction （XRD） patterns were indexed to a pure KMgF3 cubic phase.The average sizes of nanoparticles calculated by the Debye-Scherrer equation were about 20-25 nm.The emission of KMgF3：Eu2＋ nanoparticles peaked at 360 nm.The excitation band was observed at 250 nm blue shifted separately about 62 nm and 80 nm comparing with KMgF3：Eu2＋ multicrystal powders and single crystal.Fluorescence properties of KMgF3：Ce and other Re-doped fluorides nanoparticles were discussed.The emission band of KMgF3：Ce nanoparticles peaked at 330 nm,the excitation band was observed at about 260 nm.

关 键 词：纳米氟化物 光谱 测试 分析 

分 类 号：TG174.4[金属学及工艺—金属表面处理]