Oxide sulfide fluorescent powder for white light-emitting diode and preparation method thereof

A light-emitting diode and oxysulfide technology, applied in the field of fluorescent materials, can solve the problems of large light decay, poor stability, easy moisture absorption and deliquescence, etc.
CN101081979AActive Publication Date: 2007-12-05SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Publication Date
2007-12-05

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Abstract

The present invention relates to one kind of doped fluorescent oxysulfide BaZnOS material for white light LED and its preparation process, and features that the fluorescent oxysulfide material Mn or Cu doped BaZnOS in the general expression of BaZn1-xOS:Mnx, where, x=0.0002-0.1, or BaZn1-yOS:Cuy, where, y=0.0002-0.0025. The Mn doped BaZnOS fluorescent material emits red fluorescence with peak at 624 nm, and the Cu doped BaZnOS fluorescent material emits blue fluorescence with peak at 430 nm. The doped BaZnOS fluorescent material is used in white light LED and relevant display and lighting devices. The present invention has unique design, facile materials, simple preparation process, stable chemical property and excellent fluorescence emitting performance.
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Description

technical field

[0001] The invention relates to an oxysulfide fluorescent powder material which can be used for white light LED (light emitting diode) and a preparation method thereof. Said material is an electro-optical lighting material, which belongs to the field of fluorescent materials. Background technique

[0002] White light LED is called the fourth generation green lighting source, which has many advantages compared with traditional incandescent and fluorescent lamps: such as solidification, small size, long life, stable performance, low cost, fast luminous response, etc. [Y.D.Huh, J.Y.Park , S.S. Kweon, J.H. Kim, J.G. Kim, and Y.R. Do, Bull. Korean Chem. Soc. 2004, 25, 1585]. It is widely used in display devices and short-distance, low-speed optical fiber communication light sources.

[0003] There are many ways to realize white light LED. Considering factors such as feasibility and applicability, it is an ideal solution to use LED with shorter light-emitting wav...

Claims

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