The Characteristics of YAG:Ce Phosphor Powder Prepared Using a NO3−-Malonic Acid-NH4NO3-NH3·H2O System 


Vol. 33,  No. 4, pp. 1141-1146, Apr.  2012
10.5012/bkcs.2012.33.4.1141


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  Abstract

Ce-doped Y3Al5O12 (YAG:Ce) phosphor powder was prepared using a NO3 −-malonic acid-NH4NO3-NH3·H2O system. The YAG:Ce precursor was ignited at 240 oC and the resulting powder contained YAG:Ce crystallites (42%) - active in the visible region at 460 nm - amorphous particles (53%) - inactive at visible wavelengths - and less than 3% oxide (3%) crystallite impurities. The impurities transformed to acitive YAG:Ce crystallites at above 800 oC. At above 1000 oC, the amorphous phase became YAG phase and isolated Ce2O crystallites emerged. The powder particles comprised < 4 μm secondary aggregates of 20 nm primary particles. The thermal dusting of the secondary particles coincided with the aggregation of the secondary particles at above 900 oC.

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  Cite this article

[IEEE Style]

J. A. Jeong, K. Park, D. H. Lee, H. G. Kim, Y. Y. Kim, "The Characteristics of YAG:Ce Phosphor Powder Prepared Using a NO3−-Malonic Acid-NH4NO3-NH3·H2O System," Bulletin of the Korean Chemical Society, vol. 33, no. 4, pp. 1141-1146, 2012. DOI: 10.5012/bkcs.2012.33.4.1141.

[ACM Style]

Jin An Jeong, Kyunghwan Park, Dong Hoon Lee, Hong Gun Kim, and Yoo Young Kim. 2012. The Characteristics of YAG:Ce Phosphor Powder Prepared Using a NO3−-Malonic Acid-NH4NO3-NH3·H2O System. Bulletin of the Korean Chemical Society, 33, 4, (2012), 1141-1146. DOI: 10.5012/bkcs.2012.33.4.1141.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949