公开(公告)号：US11098249B2

公开(公告)日：2021-08-24

申请号：US16313883

申请日：2017-06-30

申请人： GRIREM ADVANCED MATERIALS CO., LTD.

发明人： Ronghui Liu ,  Weidong Zhuang ,  Fu Du ,  Yuanhong Liu ,  Wei Gao ,  Xia Zhang ,  Huibing Xu ,  Chunpei Yan ,  Xiaowei Zhang

IPC分类号： C09K11/77 ,  H01L33/50 ,  F21K9/64 ,  C09K11/08

摘要： Phosphor, a preparation method for the phosphor, and a light emitting device having the phosphor. The phosphor comprises an inorganic compound which at least comprises an element M, an element A, an element D, and an element R; the element M is one or two elements selected from the group consisting of Lu, La, Pr, Nd, Sm, Y, Tb, and Gd and must comprise Lu; the element A is Si and/or Ge; the element D is one or two elements selected from the group consisting of O, N, and F and must comprise N; the element R is Ce and/or Dy. Since the ionic radius of Lu3+ is smaller than that of La3+, when the inorganic compound comprises element Lu, the original ligand site would be contracted. In order to reduce lattice distortion due to the ligand site contraction, the adjacent ligand site expands, and the photochromic property is adjusted.

公开(公告)号：US11066600B2

公开(公告)日：2021-07-20

申请号：US16313894

申请日：2017-06-30

申请人： GRIREM ADVANCED MATERIALS CO., LTD.

发明人： Ronghui Liu ,  Weidong Zhuang ,  Fu Du ,  Yuanhong Liu ,  Wei Gao ,  Xia Zhang ,  Huibing Xu ,  Chunpei Yan ,  Xiaowei Zhang

IPC分类号： C09K11/77 ,  C09K11/08 ,  H01L33/50

摘要： A lutetium nitride-based phosphor and a light emitting device comprising the same, wherein the lutetium nitride-based phosphor comprises an inorganic compound, and the composition of the inorganic compound comprises at least an M element, an A element, a D element and an R element; the M element is one or two elements selected from a group consisting of Lu, La, Pr, Nd, Sm, Y, Tb and Gd, and necessarily comprises Lu; the A element is Si and/or Ge; the D element is one or two elements selected from a group consisting of O, N and F, and necessarily comprises N; the R element is Ce and/or Dy, and the atomic molar ratio of the Lu element in the M element is greater than 50%. Because the ion radius of Lu3+ is smaller than the ion radius of La3+, the light color performance thereof can be flexibly adjusted according to needs.