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High-efficiency high-thermal-stability green fluorescent ceramic for laser illumination and preparation method of high-efficiency high-thermal-stability green fluorescent ceramic
The invention discloses a high-efficiency high-thermal-stability green fluorescent ceramic for laser illumination and a preparation method thereof, the molecular formula of the fluorescent ceramic is (Ce < 0.005 > Lu0.995-xSrx) 3 (Al < 1-y > Siy) 5O12, x is the mole percent of Sr < 2 + > doped Lu < 3 + > site, y is the mole percent of Si < 4 + > doped Al < 3 + > site, x is more than 0.0025 and less than or equal to 0.01, and y is more than 0.0015 and less than or equal to 0.006; the material is prepared by a solid-phase reaction sintering method. The fluorescent ceramic emits green light near 520 nm under excitation of a blue light LD chip with the wavelength of 460 nm, can still keep 89%-100% of the room-temperature luminous intensity at the temperature of 423 K, has good thermal stability, shows a saturation threshold value of ultra-high brightness larger than 70 W/mm < 2 > under excitation of the blue light LD chip, has the luminous efficiency as high as 287.5 lm/W, and is simple in preparation method and suitable for industrial production. The method can be applied to industrial production of LED/LD devices.
本发明公开了一种激光照明用高效高热稳定性绿光荧光陶瓷及其制备方法，该荧光陶瓷的分子式为(Ce0.005Lu0.995‑xSrx)3(Al1‑ySiy)5O12，其中x为Sr2+掺杂Lu3+位的摩尔百分数，y为Si4+掺杂Al3+位的摩尔百分数，0.0025＜x≤0.01，0.0015＜y≤0.006；采用固相反应烧结法制备得到。本发明的荧光陶瓷在波长为460nm的蓝光LD芯片激发下，发射出520nm附近的绿光，在423K的温度下仍能保持室温发光强度的89％～100％，具有良好的热稳定性，并且在蓝光LD芯片激发下，显示出大于70W/mm2的超高亮度的饱和阈值，且发光效率高达287.5lm/W，制备方法简单，可应用于LED/LD器件工业化生产。
High-efficiency high-thermal-stability green fluorescent ceramic for laser illumination and preparation method of high-efficiency high-thermal-stability green fluorescent ceramic
The invention discloses a high-efficiency high-thermal-stability green fluorescent ceramic for laser illumination and a preparation method thereof, the molecular formula of the fluorescent ceramic is (Ce < 0.005 > Lu0.995-xSrx) 3 (Al < 1-y > Siy) 5O12, x is the mole percent of Sr < 2 + > doped Lu < 3 + > site, y is the mole percent of Si < 4 + > doped Al < 3 + > site, x is more than 0.0025 and less than or equal to 0.01, and y is more than 0.0015 and less than or equal to 0.006; the material is prepared by a solid-phase reaction sintering method. The fluorescent ceramic emits green light near 520 nm under excitation of a blue light LD chip with the wavelength of 460 nm, can still keep 89%-100% of the room-temperature luminous intensity at the temperature of 423 K, has good thermal stability, shows a saturation threshold value of ultra-high brightness larger than 70 W/mm < 2 > under excitation of the blue light LD chip, has the luminous efficiency as high as 287.5 lm/W, and is simple in preparation method and suitable for industrial production. The method can be applied to industrial production of LED/LD devices.
本发明公开了一种激光照明用高效高热稳定性绿光荧光陶瓷及其制备方法，该荧光陶瓷的分子式为(Ce0.005Lu0.995‑xSrx)3(Al1‑ySiy)5O12，其中x为Sr2+掺杂Lu3+位的摩尔百分数，y为Si4+掺杂Al3+位的摩尔百分数，0.0025＜x≤0.01，0.0015＜y≤0.006；采用固相反应烧结法制备得到。本发明的荧光陶瓷在波长为460nm的蓝光LD芯片激发下，发射出520nm附近的绿光，在423K的温度下仍能保持室温发光强度的89％～100％，具有良好的热稳定性，并且在蓝光LD芯片激发下，显示出大于70W/mm2的超高亮度的饱和阈值，且发光效率高达287.5lm/W，制备方法简单，可应用于LED/LD器件工业化生产。
High-efficiency high-thermal-stability green fluorescent ceramic for laser illumination and preparation method of high-efficiency high-thermal-stability green fluorescent ceramic
一种激光照明用高效高热稳定性绿光荧光陶瓷及其制备方法
ZHANG LE (author) / LIU XUANCHU (author) / WANG JINHUA (author) / MIN CHANG (author) / LI YANBIN (author) / KANG JIAN (author) / ZHOU CHUNMING (author) / ZHOU TIANYUAN (author) / CHEN HAO (author)
2023-12-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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