Luminescence properties of Eu^(3+):NaGd(WO_4_)2 nanoparticles and nanorods  

作　　者：王烨青 唐界琴 黄新阳 江亮 

机构地区：[1]School of Science, East China Jiaotong University [2]Institute of Research on the Functional Materials, Jiangxi University of Finance and Economy

出　　处：《Journal of Rare Earths》2016年第2期118-124,共7页稀土学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(61565006,61204003,51563009 and 11547229);Train Object Program of Jiangxi Province Young Scientists,Natural Science Foundation of Jiangxi Province(2011BAB206029,20142BAB216011,2015BAB213015);the Excellent Young Academic Talent Program of Jiangxi University of Finance and Economics

摘　　要：The NaGd(WO4)2:Eu3+ phosphors were prepared by the microemulsion mediated hydrothermal method. The morphology and size of the samples could be dependent on the pH in the initial solution. These phosphors obtained had a strong absorption at 395 nm matching with the popular emission of near-UV LED chips, and could emit intense red light at 616 nm. The small ellipsoid-like particles or short rods were provided with large parameters of oscillator strength?2 and asymmetry ratio. Compared to the ellip-soid-like phosphors, the rod-like phosphors took on stronger emission, longer lifetime and larger quantum efficiency. This work demonstrated that the one-dimension NaGd(WO4)2:Eu3+ phosphors might be a more favorable device than zero-dimension ones for photoluminescence.The NaGd(WO4)2:Eu3+ phosphors were prepared by the microemulsion mediated hydrothermal method. The morphology and size of the samples could be dependent on the pH in the initial solution. These phosphors obtained had a strong absorption at 395 nm matching with the popular emission of near-UV LED chips, and could emit intense red light at 616 nm. The small ellipsoid-like particles or short rods were provided with large parameters of oscillator strength?2 and asymmetry ratio. Compared to the ellip-soid-like phosphors, the rod-like phosphors took on stronger emission, longer lifetime and larger quantum efficiency. This work demonstrated that the one-dimension NaGd(WO4)2:Eu3+ phosphors might be a more favorable device than zero-dimension ones for photoluminescence.

关 键 词：microemulsion mediated hydrothermal method NaGd(WO4)2:Eu3+ red phosphors LUMINESCENCE rare earths 

分 类 号：TQ422[化学工程] TB383.1[一般工业技术—材料科学与工程]