| 녹색발광 β-SiAlON:Eu 세라믹 플레이트 형광체의 치밀화 소결 |
| 박영조, 이성훈, 장욱경, 윤창번1, 윤철수1 |
한국기계연구원부설 재료연구소 (KIMS)
1삼성엘이디 주식회사 |
| The High Density Sintering of Green-emitting β-SiAlON:Eu Ceramic Plate Phosphor |
| Young-Jo Park, Sung-Hoon Lee, Wook-Kyung Jang, Chang-Bun Yoon1, Chul-Soo Yoon1 |
Engineering Ceramics Research Group, Korea Institute of Materials Science
1Electro Materials and Device Center, Samsung LED |
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| ABSTRACT |
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$Eu^{2+}$-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. |
| Key words:
Phorphor, LED, SiAlON, Sintering, Plate |
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