Low-temperature solution synthesis and characterization of Ce-doped YAG nanoparticles

作     者：吉成 冀立宇 连刘超 沈丽明 张晓艳 王一峰 Arunava Gupta JI Cheng;JI Liyu;LIAN Liuchao;SHEN Liming;ZHANG Xiaoyan;WANG Yifeng;Arunava Gupta

作者机构：State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing University of Technology Centre for Materials for Information Technology University of Alabama 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2015年第33卷第6期

页      面：591-598页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0708[理学-地球物理学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National High Technology Research and Development Program of China(863 Program)(2013AA031901) the Natural Science Foundation of China(51202110) the Natural Science Foundation of Jiangsu Province(BK2012426) Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) 

主　　题：YAG Ce-doping nanoparticles photoluminescence rare earths 

摘      要：Monophasic Ce3＋-doped yttrium aluminum garnet （Ce：YAG） nanoparticles with high crystallinity and tunable grain size ranging from -19-30 nm were prepared by a modified co-precipitation process with a follow-up calcination treatment. For the syn- thesis, aluminum, yttrium, and cerium nitrates were used as starting materials, ammonium sulfate as dispersant, and a combination of ammonium bicarbonate and ammonia as precipitating agent. Influence of precipitation temperature, the pH value of precipitant solu- tions, aging period, calcination conditions, and Ce-doping level were investigated for controlling the purity, particle size, and photo- luminescence performance of the Ce：YAG nanoparticles. High-purity YAG nanoparticles were prepared at pH= 10.50-11.00 and cal- cination temperatures of 850-1100 ~C with a calcination time of 3 h. With increasing Ce3＋ concentration, the peak in the emission spectra of the obtained nanopowders shifted from 529 nm for the 0.67 wt.%-Ce：YAG to 544 nm for the 3.4 wt.%-Ce：YAG, while the strongest photoluminescence intensity was observed for the 1.3 wt.%-Ce：YAG nanoparticles.