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http://dx.doi.org/10.4191/KCERS.2010.47.6.503

The High Density Sintering of Green-emitting β-SiAlON:Eu Ceramic Plate Phosphor  

Park, Young-Jo (Engineering Ceramics Research Group, Korea Institute of Materials Science)
Lee, Sung-Hoon (Engineering Ceramics Research Group, Korea Institute of Materials Science)
Jang, Wook-Kyung (Engineering Ceramics Research Group, Korea Institute of Materials Science)
Yoon, Chang-Bun (Electro Materials and Device Center, Samsung LED)
Yoon, Chul-Soo (Electro Materials and Device Center, Samsung LED)
Publication Information
Journal of the Korean Ceramic Society / v.47, no.6, 2010 , pp. 503-508 More about this Journal
Abstract
$Eu^{2+}$-doped $\beta$-SiAlONs ($Si_{6-z}Al_zO_zN_{8-z}:Eu_y$) are recognized as promising phosphor materials to build an white LED for lighting application due to its excellent absorption/emission efficiency in the long wave length region. In this research, the fabrication of $\beta$-SiAlON:Eu plate phosphor by sintering was investigated with fixed Eu content(y) and varied composition of the host lattice(z). The addition of the activator $Eu_2O_3$ lead to enhanced densification by forming the transient liquid phase. The refinement of a composition by the calculated lattice parameter indicated that the measured composition of the fabricated specimens is nearly same to that of designed one. The single phase $\beta$-SiAlON:Eu plate with relative density of 96.4% was achieved by addition of 2 wt% CaO, which implies the possibility of full densification by adjusting the processing variables.
Keywords
Phorphor; LED; SiAlON; Sintering; Plate;
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