β-Na(Y_(1.5-x-y)Na_(0.5))F_6:Yb_xTm_y纳米颗粒的合成及其上转换发光性质  

Hydrothermal synthesis and up-conversion luminescence properties of β-Na(Y_(1.5-x-y)Na_(0.5))F_6:Yb_xTm_y nanoparticles

作　　者：孟根拉布其[1] 德格吉呼[1,2,3] 斯琴[1] 

机构地区：[1]内蒙古师范大学化学与环境科学学院,呼和浩特010022 [2]内蒙古功能材料物理与化学重点实验室,呼和浩特010022 [3]内蒙古绿色催化重点实验室,呼和浩特010022

出　　处：《中国科学：化学》2013年第5期544-550,共7页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(21261016;20863005);内蒙古自然科学基金(2012MS0209)资助

摘　　要：本文采用水热合成法制备了β-Na（Y1.5-x-yNa0.5）F6：YbxTmy（x=0.2~1.0,y=0.001~0.008）纳米颗粒,并利用X射线粉末衍射仪、透射电子显微镜和F-4600荧光分光光度计表征了其样品的物相、形貌和发光性质.结果表明样品物相为六角相,颗粒平均直径约22nm,并探讨了Yb3＋和Tm3＋掺杂浓度对样品的上转换发光性质的影响,结果表明敏化剂Yb3＋的最佳掺杂浓度为60%,而激活剂Tm3＋的最佳掺杂浓度为0.6%.β-Na（Y1.5-x-yNa0.5）F6：YbxTmy （x = 0.2-1.0, y = 0.001-0.008） nanoparticles were synthesized by hydrothermal method, and they were found to be blue upconversion luminescent materials. The crystal structure, morphology and up-conversion spectra of the samples were characterized using an X-ray powder diffractometer, transmission electron microscope and fluorescence spectrophotometer with single-wavelength diode laser of 980 nm. The results demonstrated that β-Na（Y1.5-x-y Na0.5）F6：YbxTmy nanoparticles with an average size of about 22 nm. The influence of Yb^3＋ and Tm^3＋ concentration on the up-conversion luminescence of the β-Na（Y1.5-x.yNa0.5）F6 nanoparticles was systematically investigated and discussed. It was found that the optimum concentration of the sensitizer Yb^3＋ was at 60% and the activator Tm^3＋ was at 0.6%.

关 键 词：稀土离子 水热合成 纳米颗粒 上转换发光 

分 类 号：O611.4[理学—无机化学]