Phosphor and production method thereof phosphor-including member, and light emitting device or projector

US11525082B2 · kind B2 · utility

Assignees

• TAMURA CORPORATION · JP
• NATIONAL INSTITUTE FOR MATERIALS SCIENCE · JP

Inventors

• Daisuke Inomata · Tokyo, JP
• Yusuke Arai · Tokyo, JP
• Kiyoshi Shimamura · Ibaraki, JP
• Encarnacion Antonia Garcia Villora · Ibaraki, JP

Key dates

• Filing date: Feb 2, 2017
• Grant date: Dec 13, 2022
• Expiry date: Jan 20, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/37
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Provided is a particulate phosphor including a single crystal having a composition represented by a compositional formula (Y1-x-y-zLuxGdyCez)3+aAl5−aO12 (0≤x≤0.9994, 0≤y≤0.0669, 0.001≤z≤0.004, −0.016≤a≤0.315) and a particle diameter (D50) of not less than 20 μm. Also provided is a light-emitting device including a phosphor-including member that includes the phosphor and a sealing member including a transparent inorganic material sealing the phosphor or a binder including an inorganic material binding particles of the phosphor, and a light-emitting element that emits a blue light for exciting the phosphor.