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%.
出处
《中国科学：化学》
CAS
CSCD
北大核心
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
关键词
稀土离子
水热合成
纳米颗粒
上转换发光
rare-earth ions, hydrothermal synthesis, nanoparticles, upconversion luminescence
