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.

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

• 김용현(목포대학교 세라믹산업기술연구소) | Yong-Hyeon Kim (The Research Institute of Ceramic Industry Technology, Mokpo National University, Muan 534-729, Republic of Korea)
• 이상진(목포대학교 세라믹산업기술연구소, 목포대학교 첨단재료공학과) | Sang-Jin Lee (The Research Institute of Ceramic Industry Technology, Mokpo National University, Muan 534-729, Republic of Korea, Department of Advanced Materials Science & Engineering, Mokpo National University, Muan 534-729, Republic of Korea) Corresponding Author