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High-thermal-conductivity and high-color-rendering-index complex-phase fluorescent ceramic for laser illumination and preparation method thereof
The invention discloses high-thermal-conductivity and high-color-rendering-index complex-phase fluorescent ceramic for laser illumination and a preparation method thereof.The complex-phase fluorescent ceramic comprises a (Gd, Ce) 3 (Al, Ga) 5O12 phase serving as a main phase and a second phase Al2O3 evenly distributed in the main phase, and light-emitting ions are Ce < 3 + >; gdGaO3, CeO2 and Al2O3 are used as initial raw materials, and a solid-phase reaction method is adopted for sintering. The excitation spectrum of the multiphase ceramic prepared by the invention is excited by the wavelength of 460nm, the main peak of the emission spectrum is 567-582nm, and the full width at half maximum is 105-120nm. Under the excitation of blue light LD (1-5W) with the wavelength of 455nm, warm white light emission is realized, the color temperature is 3800-4250K, and the color rendering index is 78-84; the thermal conductivity is 20-25 Wm <-1 > k <-1 > and is increased by 40-69% compared with that of single-phase fluorescent ceramic, and the preparation method is simple, green and environment-friendly and can be used for industrial production of LD devices.
本发明公开了一种激光照明用高热导、高显指复相荧光陶瓷及其制备方法，所述复相荧光陶瓷包括作为主相的(Gd,Ce)3(Al,Ga)5O12相，以及均匀分布在主相中的第二相Al2O3，其中发光离子为Ce3+；以GdGaO3、CeO2、Al2O3作为初始原料，采用固相反应法烧结。本发明制备的复相陶瓷的激发光谱在波长460nm波长激发下，发射光谱主峰在567～582nm之间，半高宽在105～120nm之间。在波长为455nm蓝光LD(1～5W)激发下，实现暖白光发射，色温3800～4250K，显色指数在78～84之间；热导率为20～25Wm‑1k‑1，相比单相荧光陶瓷的热导率提升了40～69％，并且制备方法简单，绿色环保，可用于LD器件工业化生产。
High-thermal-conductivity and high-color-rendering-index complex-phase fluorescent ceramic for laser illumination and preparation method thereof
The invention discloses high-thermal-conductivity and high-color-rendering-index complex-phase fluorescent ceramic for laser illumination and a preparation method thereof.The complex-phase fluorescent ceramic comprises a (Gd, Ce) 3 (Al, Ga) 5O12 phase serving as a main phase and a second phase Al2O3 evenly distributed in the main phase, and light-emitting ions are Ce < 3 + >; gdGaO3, CeO2 and Al2O3 are used as initial raw materials, and a solid-phase reaction method is adopted for sintering. The excitation spectrum of the multiphase ceramic prepared by the invention is excited by the wavelength of 460nm, the main peak of the emission spectrum is 567-582nm, and the full width at half maximum is 105-120nm. Under the excitation of blue light LD (1-5W) with the wavelength of 455nm, warm white light emission is realized, the color temperature is 3800-4250K, and the color rendering index is 78-84; the thermal conductivity is 20-25 Wm <-1 > k <-1 > and is increased by 40-69% compared with that of single-phase fluorescent ceramic, and the preparation method is simple, green and environment-friendly and can be used for industrial production of LD devices.
本发明公开了一种激光照明用高热导、高显指复相荧光陶瓷及其制备方法，所述复相荧光陶瓷包括作为主相的(Gd,Ce)3(Al,Ga)5O12相，以及均匀分布在主相中的第二相Al2O3，其中发光离子为Ce3+；以GdGaO3、CeO2、Al2O3作为初始原料，采用固相反应法烧结。本发明制备的复相陶瓷的激发光谱在波长460nm波长激发下，发射光谱主峰在567～582nm之间，半高宽在105～120nm之间。在波长为455nm蓝光LD(1～5W)激发下，实现暖白光发射，色温3800～4250K，显色指数在78～84之间；热导率为20～25Wm‑1k‑1，相比单相荧光陶瓷的热导率提升了40～69％，并且制备方法简单，绿色环保，可用于LD器件工业化生产。
High-thermal-conductivity and high-color-rendering-index complex-phase fluorescent ceramic for laser illumination and preparation method thereof
一种激光照明用高热导、高显指复相荧光陶瓷及其制备方法
ZHANG LE (author) / WANG JINHUA (author) / SANG PENGFEI (author) / YOO HYUN-CHO (author) / MIN CHANG (author) / LI YANBIN (author) / KANG JIAN (author) / ZHOU CHUNMING (author) / ZHOU TIANYUAN (author) / CHEN HAO (author)
2023-08-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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High-thermal-conductivity fluorescent ceramic for laser illumination and preparation method thereof
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