OXYNITRIDE-BASED PHOSPHOR AND LIGHT-EMITTING DEVICE USING THE SAME

PROBLEM TO BE SOLVED: To provide an oxynitride-based phosphor emitting blue to green light, enabling to fill the gap between blue light and green light.SOLUTION: This phosphor includes a crystal phase having a composition represented by formula (1): (A, Eu)DENO; in formula (1), A represents an alkal...

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Bibliographic Details
Main Authors YOSHIMURA FUMITAKA, HUANG WAN-YU, UEDA KYOTA, RYU JOKI
Format Patent
LanguageEnglish
Published 20.06.2013
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMISTRY
DYES
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES 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:PROBLEM TO BE SOLVED: To provide an oxynitride-based phosphor emitting blue to green light, enabling to fill the gap between blue light and green light.SOLUTION: This phosphor includes a crystal phase having a composition represented by formula (1): (A, Eu)DENO; in formula (1), A represents an alkaline earth metal element essentially including barium (Ba); Eu represents an activator element essentially including europium (Eu); D represents a tetravalent metal element essentially including silicon (Si); E represents a trivalent metal element essentially including aluminum (Al); x is a number satisfying 0.0001≤x≤0.20; a, b, c and d are numbers satisfying: 1.2≤a<2, 1<b≤1.8, 2.2≤c<3, 2<d≤2.8, 2.6<a+b<3.4, 4.6<c+d<5.4, respectively.
Bibliography:Application Number: JP20120247434