RARE EARTH ALUMINATE PHOSPHOR AND PRODUCTION METHOD THEREOF, WAVELENGTH CONVERSION MEMBER, LIGHT EMITTING DEVICE, AND PROJECTOR

Abstract: a rare earth aluminate phosphor includes: a first element mincluding at least one selected from the group consisting of yttrium (y), lanthanum (la), lutetium (lu), gadolinium (gd), and terbium (tb); cerium (ce); aluminum (al); oxygen atoms (o) and optionally a second element mincluding at least one selected from the group consisting of gallium (ga) and scandium (sc). the rare earth aluminate phosphor has a composition in which when a number of moles of oxygen atoms is 12, a total number of moles of the first element mand cerium is 2.9 or more and 3.1 or less, and a total number of moles of aluminum and the second element mis 4.5 or more and 5.5 or less, and has a reflection spectrum in which a ratio of reflectance at a wavelength of 280 nm to reflectance at a wavelength of 380 nm is 0.33 or more and 0.76 or less.

Inventor(s): Yasuaki MASHIMA, Sadakazu WAKUI

CPC Classification: C09K11/7774 (MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE)

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