Grirem Advanced Materials Co., Ltd.

Guoke Re Advanced Materials Co., Ltd.

Lengleng Shao

Ronghui Liu

Yuanhong Liu

Lei Chen

Xiaole Ma

Guantong Chen

Yuming Jin

Ze Jiang

The present invention belongs to the technical field of inorganic luminescent materials, particularly relates to a nitride fluorescent material, and further discloses a light-emitting device containing such a fluorescent material. The nitride fluorescent material contains a compound with a structure like MAlSiN: aR, bEu, cCe. The fluorescent material has very high physical stability and chemical stability, and the fluorescent material is better in crystallization, and thus has relatively high external quantum efficiency. When being applied to a light-emitting device, the fluorescent material can fully exert the advantages of good stability and high external quantum efficiency, and the light-emitting efficiency and stability of the light-emitting device can be further improved.

Nitride fluorescent material and light-emitting device containing same

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 KGeF, the space group structure being the hexagonal crystal system P-6mc(186). The red phosphor powder has a uniform morphology, a high luminescent efficiency and a good stability.

Red phosphor powder, preparation method thereof and luminescent device comprising same

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Beijing, China

Lengleng Shao