High-thermal-stability fluorescent ceramic for white LED/LD and preparation method thereof

A high thermal stability, fluorescent ceramic technology, applied in electrical components, circuits, semiconductor devices, etc., can solve the problems of temperature quenching, thermal stability deterioration of fluorescent ceramics, etc., to eliminate lattice distortion, improve service performance, improve The effect of thermal stability
CN111393166AActive Publication Date: 2020-07-10XUZHOU ALL TO PHOTOELECTRIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XUZHOU ALL TO PHOTOELECTRIC TECH CO LTD
Publication Date
2020-07-10

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Abstract

The invention discloses a high-thermal-stability fluorescent ceramic for white light LED / LD and a preparation method of the fluorescent ceramic. The chemical formula of the fluorescent ceramic is shown in the specification: (GdzCexY1-X-Z)3(ScyAl1-Y)2Al3O12, wherein x is the molar percentage of Ce<3+> doped Y<3+> sites, y is the molar percentage of Sc<3+> doped octahedron Al <3+> sites, z is the molar percentage of Gd<3+> doped Y<3+> sites, x is greater than 0 and less than or equal to 0.02, y is greater than or equal to 0.6 and less than or equal to 0.8, and y: z is 10: 1. The transparent fluorescent ceramic material disclosed by the invention has an emission spectrum main peak of 520-540nm and a full width at half maximum of 80-90nm. Under the excitation of a high-power blue light LED (350-500mA) or a blue light LD (4W-10W), warm white light to light green light emission is realized, the color temperature is 2800-6500K, and the luminous intensity is attenuated by 5%-10% at 150 DEG C.The prepared ceramic is simple in process and easy for industrial production.
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Description

technical field

[0001] The invention relates to the technical field of fluorescent ceramics, in particular to a fluorescent ceramic with high thermal stability for white light LED / LD and a preparation method thereof. Background technique

[0002] Global problems such as energy crisis, climate warming, and ecological environment pollution have made the environmental protection and energy-saving industry widely valued at home and abroad. In the field of semiconductor lighting, white LEDs, as a new generation of green solid-state lighting sources, have unparalleled competitive advantages due to their high luminous efficiency, small device size, and long service life. With the development of society and the improvement of quality of life, people are more keen on pursuing high-power, high-quality and healthy green lighting sources. Therefore, the traditional phosphor Ce 3+ :Y 3 Al 5 o 12 The method of mixing (Ce:YAG) with organic silica gel is gradually being replaced by the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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