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Green fluorescent ceramic, and preparation method and application thereof
The invention discloses a green fluorescent ceramic, and a preparation method and application thereof, and belongs to the technical field of luminescent materials. The chemical formula of the green fluorescent ceramic is Lx-deltaEudeltaSi6-zAlz-xOz+xN8-z-x (0 < delta <= x < z <= 4.2), the crystal main phase has the same crystal structure as the beta-type silicon nitride, and the activated Eu is used as a luminescence center and is dissolved in the crystal structure. By adjusting the values of delta, x and z in the chemical composition, the fluorescent ceramic with adjustable fluorescence emission peak position and full and half peak width can be obtained. The compact and high-strength green fluorescent ceramic with required shape, size, thickness and surface precision can be obtained through the process preparation methods of powder raw material mixing, isostatic pressing high-pressure blank pressing, protective atmosphere high-temperature calcination, machining, post-treatment and the like. The green fluorescent ceramic can be applied to display or lighting devices, and the color gamut range of the high-power LED/laser display or lighting devices and the use stability of optical parameters are improved.
本发明公开了一种绿色荧光陶瓷及其制备方法和应用，属于发光材料技术领域。该绿色荧光陶瓷化学式为Lx‑δEuδSi6‑zAlz‑xOz+xN8‑z‑x(0<δ≤x
Green fluorescent ceramic, and preparation method and application thereof
The invention discloses a green fluorescent ceramic, and a preparation method and application thereof, and belongs to the technical field of luminescent materials. The chemical formula of the green fluorescent ceramic is Lx-deltaEudeltaSi6-zAlz-xOz+xN8-z-x (0 < delta <= x < z <= 4.2), the crystal main phase has the same crystal structure as the beta-type silicon nitride, and the activated Eu is used as a luminescence center and is dissolved in the crystal structure. By adjusting the values of delta, x and z in the chemical composition, the fluorescent ceramic with adjustable fluorescence emission peak position and full and half peak width can be obtained. The compact and high-strength green fluorescent ceramic with required shape, size, thickness and surface precision can be obtained through the process preparation methods of powder raw material mixing, isostatic pressing high-pressure blank pressing, protective atmosphere high-temperature calcination, machining, post-treatment and the like. The green fluorescent ceramic can be applied to display or lighting devices, and the color gamut range of the high-power LED/laser display or lighting devices and the use stability of optical parameters are improved.
本发明公开了一种绿色荧光陶瓷及其制备方法和应用，属于发光材料技术领域。该绿色荧光陶瓷化学式为Lx‑δEuδSi6‑zAlz‑xOz+xN8‑z‑x(0<δ≤x
Green fluorescent ceramic, and preparation method and application thereof
一种绿色荧光陶瓷及其制备方法和应用
ZHANG LIN (author) / LI WANYUAN (author) / MAO JIAN (author) / LU LU (author)
2021-06-29
Patent
Electronic Resource
Chinese
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