US 11,932,793 B2
Phosphor with garnet structure and light-emitting device comprising the phosphor
Ronghui Liu, Beijing (CN); Shaowei Qin, Beijing (CN); Yuanhong Liu, Beijing (CN); Yanfeng Li, Beijing (CN); Xiaoxia Chen, Beijing (CN); Xiaole Ma, Beijing (CN); and Yuan Xue, Beijing (CN)
Assigned to GRIREM ADVANCED MATERIALS CO., LTD., Beijing (CN); Grirem Hi-Tech Co., Ltd, Langfang (CN); and Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Baoding (CN)
Filed by GRIREM ADVANCED MATERIALS CO., LTD., Beijing (CN); GRIREM HI-TECH CO., LTD., Hebei (CN); and Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Hebei (CN)
Filed on May 19, 2022, as Appl. No. 17/748,789.
Claims priority of application No. 202110725551.4 (CN), filed on Jun. 29, 2021.
Prior Publication US 2022/0411694 A1, Dec. 29, 2022
Int. Cl. C09K 11/77 (2006.01); C09K 11/02 (2006.01); H01L 33/50 (2010.01)
CPC C09K 11/7774 (2013.01) [C09K 11/02 (2013.01); H01L 33/502 (2013.01); C01P 2004/84 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A phosphor with garnet structure, wherein the phosphor comprises the following components in percentage by weight: 38.47-45.19% of Y element, 9.49-22.09% of Al element, 2.06-24.31% of Ga element, 27.3-32.04% of O element and 0.43-1.46% of Ce element; the shortest distance from the surface of one side of the phosphor to the surface of the opposite side through the centroid of the phosphor is defined as R, 5 μm≤R≤40 μm;
any distance from the phosphor surface to the centroid is r, 0<r<½R; and the space with the distance from the phosphor surface to the centroid direction being less than or equal to r is defined as rinner, and the space with the distance from the phosphor surface to the centroid direction being greater than r is defined as router, whereat the ratio of the weight percentage of Ga elements in any unit volume in router to rinner is n, and 0≤n≤1.