Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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The High Density Sintering of Green-emitting β-SiAlON:Eu Ceramic Plate Phosphor

녹색발광 β-SiAlON:Eu 세라믹 플레이트 형광체의 치밀화 소결

  • 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)
  • 박영조 (한국기계연구원부설 재료연구소 (KIMS)) ;
  • 이성훈 (한국기계연구원부설 재료연구소 (KIMS)) ;
  • 장욱경 (한국기계연구원부설 재료연구소 (KIMS)) ;
  • 윤창번 (삼성엘이디 주식회사) ;
  • 윤철수 (삼성엘이디 주식회사)
  • Received : 2010.09.27
  • Accepted : 2010.10.26
  • Published : 2010.11.30
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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

References

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