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Fluorescent ceramic for high-color-rendering-index laser illumination and preparation method of fluorescent ceramic
The invention relates to fluorescent ceramic for high-color-rendering-index laser illumination and a preparation method thereof. The chemical composition of the fluorescent ceramic is YAG: Ce-(Y1-xRex)3(Al1-yMy)5O12, wherein Re is one or two of Pr or Sm, and M is one or two of Cr and Mn. The fluorescent ceramic obtained through the preparation methods of ball-milling mixing, dry-pressing forming,sintering and the like is of a structure in which large-size YAG: Ce particles are embedded around (Y1-xRex)3(Al1-yMy)5O12 crystal grains. As cerium ions emitting yellow light and activated ions emitting red light are located in different crystal grains, the probability of energy transfer is greatly reduced. The obtained fluorescent ceramic can keep the luminous intensity of yellow light while increasing red light emission, and therefore, white light with a high color rendering index and high luminous efficiency can be obtained under the excitation of a blue light LD.
本发明涉及一种用于高显指激光照明的荧光陶瓷及其制备方法,荧光陶瓷的化学组成为YAG:Ce‑(Y1‑xRex)3(Al1‑yMy)5O12，其中，Re为Pr或Sm中的一种或两种，M为Cr、Mn中的一种或两种。通过球磨混料，干压成型和烧结等制备方法得到的荧光陶瓷结构为大尺寸的YAG:Ce颗粒镶嵌在(Y1‑xRex)3(Al1‑yMy)5O12晶粒周围。由于发射黄光的铈离子和发射红光的激活离子处于不同的晶粒中，所以，发生能量传递的几率大幅度降低。获得的荧光陶瓷可以实现在增加红光发射的同时，保持黄光的发光强度；从而在蓝光LD的激发下获得高显色指数和高光效的白光。
Fluorescent ceramic for high-color-rendering-index laser illumination and preparation method of fluorescent ceramic
The invention relates to fluorescent ceramic for high-color-rendering-index laser illumination and a preparation method thereof. The chemical composition of the fluorescent ceramic is YAG: Ce-(Y1-xRex)3(Al1-yMy)5O12, wherein Re is one or two of Pr or Sm, and M is one or two of Cr and Mn. The fluorescent ceramic obtained through the preparation methods of ball-milling mixing, dry-pressing forming,sintering and the like is of a structure in which large-size YAG: Ce particles are embedded around (Y1-xRex)3(Al1-yMy)5O12 crystal grains. As cerium ions emitting yellow light and activated ions emitting red light are located in different crystal grains, the probability of energy transfer is greatly reduced. The obtained fluorescent ceramic can keep the luminous intensity of yellow light while increasing red light emission, and therefore, white light with a high color rendering index and high luminous efficiency can be obtained under the excitation of a blue light LD.
本发明涉及一种用于高显指激光照明的荧光陶瓷及其制备方法,荧光陶瓷的化学组成为YAG:Ce‑(Y1‑xRex)3(Al1‑yMy)5O12，其中，Re为Pr或Sm中的一种或两种，M为Cr、Mn中的一种或两种。通过球磨混料，干压成型和烧结等制备方法得到的荧光陶瓷结构为大尺寸的YAG:Ce颗粒镶嵌在(Y1‑xRex)3(Al1‑yMy)5O12晶粒周围。由于发射黄光的铈离子和发射红光的激活离子处于不同的晶粒中，所以，发生能量传递的几率大幅度降低。获得的荧光陶瓷可以实现在增加红光发射的同时，保持黄光的发光强度；从而在蓝光LD的激发下获得高显色指数和高光效的白光。
Fluorescent ceramic for high-color-rendering-index laser illumination and preparation method of fluorescent ceramic
一种用于高显指激光照明的荧光陶瓷及其制备方法
SUN XUDONG (Autor:in) / ZHAO HUANYU (Autor:in) / YU HUAQIAN (Autor:in) / LI XIAODONG (Autor:in) / LI JIGUANG (Autor:in)
27.11.2020
Patent
Elektronische Ressource
Chinesisch
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