研究目的
Optimization of fabrication of a ceramic phosphor plate (CPP) using α-Al2O3 as functional materials for an automotive laser headlamp.
研究成果
The CPP using α-Al2O3 is one of the most effective ways to obtain high luminosity. The results suggest that CPP using this technique can be a potential candidate as a color-conversion layer for LD application.
研究不足
Thermal quenching at high blue radiant flux density from 6.7 W/mm2 due to the ionization of the electrons from the exited state to the conduction band.
1：Experimental Design and Method Selection:
The study focused on optimizing the fabrication of CPP using YAG: Ce3+ phosphor and α-Al2O3 powder for LD application for white-light generation. Nano-sized YAG: Ce3+ phosphors were prepared, and CPP was complexed with α-Al2O
2：The fabrication procedure included ball-milling, drying, pressing, calcining, sintering, annealing, and polishing. Sample Selection and Data Sources:
Nano YAG: Ce3+ (
3：5 mol%) phosphor was used. List of Experimental Equipment and Materials:
X-ray diffraction (XRD, D-MAX 2500, Rigaku, Tokyo, Japan), field-emission scanning electron microscopy (FE-SEM, JSM-7600F, JEOL, Japan), photoluminescence quantum yield (PLQY) measurement system (PL, C10027/C9920-20, Bio-rad), double integrating spheres (PSI Co., Ltd/Korea), blue-laser excitation (445 nm blue LD).
4：Experimental Procedures and Operational Workflow:
The process involved ball-milling, drying, pressing, calcining, sintering, annealing, and polishing.
5：Data Analysis Methods:
The analysis concentrated on optical properties, including the luminous ones, using XRD, FE-SEM, PLQY, and double integrating spheres.
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