Fluorescent ceramic as well as preparation method and application thereof

A technology for fluorescent ceramics and ceramic china, applied in chemical instruments and methods, electric light sources, luminescent materials, etc., can solve problems such as major breakthroughs in laser performance, and achieve good laser saturation performance, high luminous efficiency, and huge application potential. Effect
CN111995397AInactive Publication Date: 2020-11-27NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Publication Date
2020-11-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses fluorescent ceramic as well as a preparation method and application thereof. The fluorescent ceramic is selected from at least one of substances with a composition general formula shown in a formula I, and the formula I is Lu<3-x-y>Ce<x>M<y>Al<5-y>Q<y>O12, wherein M represents a first co-doped element, the first co-doped element is selected from at least one of alkaline earth metal elements, Q represents a second co-doped element, the second co-doped element is selected from at least one of a Si element and a Ge element, x is more than or equal to 0.0001 and less than or equal to 0.3, and y is more than or equal to 0 and less than or equal to 2. Charge balance is realized through equivalent common doping of doped M<2+> and Q<4+> ions, so that variable-valence Ce<3+>ions in the fluorescent ceramic are inhibited from being converted into Ce<4+> ions, and the fluorescent ceramic is mostly composed of Ce<3+> light-emitting ions. The fluorescent ceramic has the characteristics of high density, good laser saturation performance, high luminous efficiency and the like, can be used as a key material of a color converter, and has a huge application potential in the field of high-power laser illumination.
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Description

technical field

[0001] The application relates to a fluorescent ceramic and its preparation method and application, belonging to the field of fluorescent ceramic materials. Background technique

[0002] As the blue light LD technology matures, the concept of laser lighting is also proposed. In 2012, OSRAM and BMW first installed laser lighting lamps in the BMW i8 car. The heat of laser lighting research has also increased. Laser white light source has the advantages of high brightness, fast response speed and long transmission distance, and is widely used in remote lighting fields such as automotive lighting, display, industrial lighting and high-speed rail ships.

[0003] However, as the lumen density continues to increase, higher requirements are placed on light conversion materials. At present, the requirements of laser lighting for fluorescent materials mainly include high quantum efficiency, high thermal conductivity, good thermal shock resistance, and good temperatur...

Claims

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