PVA 용액법과 국산 산화알루미늄을 적용하여 대기 플라즈마 용사법으로 합성된 구형의 YAG:Ce3+ 형광체의 발광특성

서지정보

ㆍ발행기관 : 한국분말야금학회 ㆍ수록지정보 : 한국분말야금학회지 / 30권 / 5호
ㆍ저자명 : 김용현, 이상진

목차

1. Introduction
2. Experimental
2.1. YAG:Ce3+ 전구체 제조
2.2. Spray drying를 이용한 과립 분말 제조
2.3. 플라즈마 용사를 통한 구형 YAG:Ce3+ 형광체 제조
2.4. 특성분석
3. Result and Discussion
4. Conclusion
Acknowledgement

영어 초록

YAG phosphor powders were fabricated by the atmospheric plasma spraying method with the spray-dried spherical YAG precursor. The YAG precursor slurry for the spray drying process was prepared by the PVA solution chemical processing utilizing a domestic easy-sintered aluminum oxide (Al2O3) powder as a seed. The homogenous and viscous slurry resulted in dense granules, not hollow or porous particles. The synthesized phosphor powders demonstrated a stable YAG phase, and excellent fluorescence properties of approximately 115% compared with commercial YAG:Ce3+ powder. The microstructure of the phosphor powder had a perfect spherical shape and an average particle s ize of a pprox imately 30 μm. As a r esult of t he PKG t est of t he YAG p hosphor p owder, t he s ynthesized phosphor powders exhibited an outstanding luminous intensity, and a peak wavelength was observed at 531 nm.

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