PHOSPHOR PRODUCTION METHOD AND PHOSPHOR

A method for producing a phosphor having a core-shell structure that includes: a core part formed of a crystal phase of an inorganic compound containing a metal element M constituting a luminescent center ion and aluminum; and a shell part containing at least one element selected from the group cons...

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Bibliographic Details
Main Authors IWASAKI, Kentaro, SASAKI, Shinichi, ARIMURA, Takashi, KANNAMI, Masaki, NAITO, Shota
Format Patent
LanguageEnglish
French
German
Published 13.12.2023
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
DYES
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
INORGANIC CHEMISTRY
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:A method for producing a phosphor having a core-shell structure that includes: a core part formed of a crystal phase of an inorganic compound containing a metal element M constituting a luminescent center ion and aluminum; and a shell part containing at least one element selected from the group consisting of boron and silicon and formed on at least a portion of a surface of the core part, the method including: mixing a raw material of the crystal phase and a raw material of the shell part; and heating the obtained mixture at a temperature at which the raw material of the shell part is liquefied, but a host crystal of a phosphor to be obtained is maintained, in which the raw material of the crystal phase contains a raw material compound having D50 in a particle diameter distribution of 0.2 to 90 µm and containing aluminum.
Bibliography:Application Number: EP20220749578