BLUE FLUORESCENT POWDER AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

Disclosed are a blue fluorescent powder and a preparation method therefor and an application thereof, belonging to the technical field of fluorescent powder used for light emitting diode (LED) in illumination and display field. Eu2+ is used as an activator, and a sol-gel method is adopted to prepare...

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Bibliographic Details
Main Authors WEI, Feilong, WANG, Mengxia, WANG, Yi
Format Patent
LanguageChinese
English
French
Published 28.01.2021
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMISTRY
DYES
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
SEMICONDUCTOR DEVICES
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Summary:Disclosed are a blue fluorescent powder and a preparation method therefor and an application thereof, belonging to the technical field of fluorescent powder used for light emitting diode (LED) in illumination and display field. Eu2+ is used as an activator, and a sol-gel method is adopted to prepare SrAl2SiO 6:nEu2+(n=0.006-0.008) blue fluorescent powder. The described preparation method can uniformly mix the raw materials into a power with high activity, thus greatly reduces the later sintering temperature and saves energy. With easy reaction and a formed sample having high purity to match ultraviolet and/or near ultraviolet LED chip, the method has a simple preparation technology and an easily operable production process. L'invention concerne une poudre fluorescente bleue et un procédé de préparation s'y rapportant ainsi que son application, appartenant au domaine technique des poudres fluorescentes utilisées pour une diode électroluminescente (DEL) dans le domaine de l'éclairage et de l'affichage. Selon l'
Bibliography:Application Number: WO2019CN109529