PHOSPHOR AND METHOD FOR PRODUCING THE SAME, PHOSPHOR-CONTAINING COMPOSITION, LIGHT-EMITTING DEVICE, IMAGE DISPLAY DEVICE, AND ILLUMINATING DEVICE

• Main Authors: KIJIMA, NAOTO, SETO, TAKATOSHI, SHIMIZU, ETSUO
• Format: Patent
• Language: English; French; Japanese
• Published: 16.10.2008
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; DEVICES USING STIMULATED EMISSION; 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

Disclosed is a phosphor having excellent temperature characteristics, which enables to stably obtain high luminous intensity and luminance when excited by near ultraviolet light. Specifically disclosed is a phosphor having a crystal phase wherein the Eu substitution rate relative to the number of sites at which Eu (europium) substitution can occur is not less than 15%. The crystal phase of this phosphor contains an alkali metal element, and the alkali metal content relative to the number of sites at which Eu substitution can occur is not more than 3%. L'invention concerne un phosphore doté d'excellentes propriétés thermiques qui permet d'obtenir une intensité lumineuse et une luminance élevées lorsqu'il est excité par une lumière proche de l'ultraviolet. L'invention concerne en particulier un phosphore doté d'une phase cristalline où le taux de substitution de l'Eu par rapport au nombre de sites susceptibles de substitution de l'Eu (europium) est supérieur à 15 %. La phase cristalline de ce phosphore contient un élément métallique alcalin et la teneur en métal alcalin par rapport au nombre de sites susceptibles de substitution de l'Eu est inférieure à 3 %.