Enhanced Luminescence Properties of YAG:Ce3+ Nanophosphor Prepared by Flame Spray Pyrolysis

被引：13

作者：

Lee, Jae Seok ^{[1
]}

Kumar, Purushottam

Gupta, Sushant

Oh, Myoung Hwan

Ranade, Madhav B. ^{[1
]}

Singh, Rajiv K.

机构：

[1] Univ Florida, Particle Engn Res Ctr, Gainesville, FL 32611 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2010年 / 157卷 / 02期

关键词：

cerium; heat treatment; luminescence; nanostructured materials; nanotechnology; phosphors; yttrium compounds; YTTRIUM-ALUMINUM-GARNET; YAG-CE PHOSPHOR; SOL-GEL PYROLYSIS; COMBUSTION SYNTHESIS; UREA; PHOTOLUMINESCENCE; PARTICLES; PRECURSOR;

D O I：

10.1149/1.3262609

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Cerium-doped Y3Al5O12 (YAG):Ce3+ nanophosphor particles were synthesized using flame spray pyrolysis (FSP) from urea-added nitrate liquid precursor with different molar ratios of yttrium to aluminum. The effect of urea and Y:Al molar ratio in the liquid precursor on the crystallinity and luminescence properties of YAG:Ce3+ nanophosphors was studied. The cubic YAG structure was obtained after heat-treatment of as-prepared particles. The addition of urea leads to a higher flame temperature and helps in the formation of crystalline phase during FSP. A higher molar concentration of Al in the liquid precursor helped in better incorporation of the dopant atom in the lattice and also promoted the formation of YAG phase. Well-dispersed spherical particles with an estimated size of 50 nm were obtained by the process. The YAG:Ce3+ nanophosphors synthesized using urea and excess aluminum in liquid precursor showed better crystallinity and higher luminescence intensity.

引用

页码：K25 / K29

页数：5

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