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

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 use...

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Published inJournal of rare earths Vol. 33; no. 6; pp. 591 - 598
Main Author 吉成 冀立宇 连刘超 沈丽明 张晓艳 王一峰 Arunava Gupta
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2015
Subjects
AG纳米粒子
Aluminum
Calcination
Ce-doping
Ce掺杂
Ce：YAG
Nanoparticles
Photoluminescence
Rare earth metals
rare earths
Synthesis
YAG
Yttrium
光致发光性能
共沉淀工艺
纳米颗粒
表征
钇铝石榴石
nanoparticles
photoluminescence
Ce-doping
YAG
rare earths
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ISSN1002-0721
2509-4963
DOI10.1016/S1002-0721(14)60458-0

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Summary: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.
Bibliography:11-2788/TF
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.
JI Cheng , JI Llyu , LIAN Liuchao , SHEN Liming , ZHANG Xiaoyan , WANG Yifeng , Arunava Gupta （1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China,2. Centre for Materials for Information Technology, University of Alabama, Tuscaloosa, AL 35487, United States）
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ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(14)60458-0