公开(公告)号：US10385265B2

公开(公告)日：2019-08-20

申请号：US16060548

申请日：2016-12-07

Applicant: Grirem Advanced Materials Co., Ltd.

Inventor： Ronghui Liu ,  Guantong Chen ,  Yuming Jin ,  Xiaole MA ,  Yuanhong Liu ,  Lengleng Shao

IPC: C09K11/67 ,  C09K11/66 ,  C09K11/77 ,  C09K11/08 ,  H01L33/50

Abstract: The present disclosure provides a red phosphor powder, a preparation method thereof and a luminescent device comprising the red phosphor powder. The red phosphor powder comprises inorganic compounds containing an element A, an element D, an element X and manganese, wherein element A is one or more selected from a group of Li, Na and K and necessarily includes K; element D is composed of Ge and Si, or element D is composed of Si, Ge and Ti; and element X is one or more selected from a group of F, Br and Cl and necessarily includes F; and the inorganic compound has the same space group structure as K2GeF6, the space group structure being the hexagonal crystal system P-63mc(186). The red phosphor powder has a uniform morphology, a high luminescent efficiency and a good stability.

公开(公告)号：US20180355243A1

公开(公告)日：2018-12-13

申请号：US16060548

申请日：2016-12-07

Applicant: Grirem Advanced Materials Co., Ltd.

Inventor： Ronghui Liu ,  Guantong Chen ,  Yuming Jin ,  Xiaole MA ,  Yuanhong Liu ,  Lengleng Shao

IPC: C09K11/67 ,  C09K11/66 ,  C09K11/77 ,  C09K11/08 ,  H01L33/50

CPC classification number: C09K11/676 ,  C09K11/0883 ,  C09K11/665 ,  C09K11/666 ,  C09K11/7734 ,  H01L33/502 ,  H01L33/504

Abstract: The present disclosure provides a red phosphor powder, a preparation method thereof and a luminescent device comprising the red phosphor powder. The red phosphor powder comprises inorganic compounds containing an element A, an element D, an element X and manganese, wherein element A is one or more selected from a group of Li, Na and K and necessarily includes K; element D is composed of Ge and Si, or element D is composed of Si, Ge and Ti; and element X is one or more selected from a group of F, Br and Cl and necessarily includes F; and the inorganic compound has the same space group structure as K2GeF6, the space group structure being the hexagonal crystal system P-63mc(186). The red phosphor powder has a uniform morphology, a high luminescent efficiency and a good stability.

公开(公告)号：US11680203B2

公开(公告)日：2023-06-20

申请号：US16612299

申请日：2017-10-18

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Ronghui Liu ,  Guantong Chen ,  Yuanhong Liu ,  Xiaole Ma

IPC: C09K11/08 ,  C09K11/66 ,  C09K11/61 ,  C09K11/02 ,  H01L33/50 ,  C09K11/67

CPC classification number: C09K11/677 ,  C09K11/025 ,  H01L33/502

Abstract: The present invention relates to a red phosphor, a preparation method thereof and a light-emitting device prepared therefrom. A particle of the red phosphor consists of a phosphor inner core having a chemical formula of Ax1Gez1F6:y1Mn4+ and an outer shell having a chemical formula of Bx2Mz2F6:y2Mn4+, wherein 1.596≤x1≤2.2, 1.6≤x2≤2.2, 0.001≤y1≤0.2, 0≤y2≤0.2, 0.9≤z1≤1.1, and 0.9≤z2≤1.1; A and B are independently selected from alkali metal elements; and M is Si, or Si and Ge. The red phosphor provided by the present invention has high luminous efficiency and stability. Moreover, the phosphor alone or in combination with other luminescent materials can be used for preparing a light-emitting device with high performance.