Vacuum-ultraviolet-excited aluminate green luminophore andits production

Abstract

A vacuum ultraviolet-excited aluminate green luminophor and its production are disclosed. The chemical formula is Ba0.956Mg0.912-xMnxAl10.088017, 0.05<=X<=0.3; The process is carried out by taking aluminum source, barium source, magnesium source and manganese source as raw materials, adding into fusing agent 0-8%mol, mixing, firing at 1350-1700degree in reducing gas for 1-10hrs, and cooling to obtain the final product. The brightness of the luminophor is >BaAl12019:Mn under 147nm vacuum ultraviolet excitation. It's simple and cheap and can be used for plasma planar display device of color large screen.

Description

technical field The invention relates to a vacuum ultraviolet excited aluminate green phosphor and a preparation method thereof. Background technique In recent years, light-emitting devices excited by vacuum ultraviolet rays have been widely used. The mechanism is that the vacuum ultraviolet rays generated by the discharge of rare gases Xe, Ne-Xe, Ar, etc. excite phosphors to emit visible light. Under the excitation of vacuum ultraviolet rays, the light-emitting devices include color large-screen high-definition plasma flat panel display (PDP), mercury-free fluorescent lamps, etc., and PDP uses vacuum ultraviolet rays to excite different phosphors to produce three different colors of light: red, green and blue. Thereby displaying color images, PDP has the advantages of small size, thin thickness and vivid images, and is easy to be made into large-area flat-panel displays. It has been applied in many aspects such as high-definition television (HDTV) and computer monitors. ...

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Problems solved by technology

Another example is U.S. Patent No. 5,868,963, which discloses a high-efficiency green phosphor BaAl under vacuum ultraviolet excitation. 12 o 19 : the preparation method of Mn, the fluorescent body has Zn and Zn under the excitation of vacuum ultraviolet ray 2 SiO 4 : Mn equivalent luminous efficiency, and relatively short fluorescence lifetime, can be used in plasma flat panel TV

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