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US 9,732,271 B2Granted
Rare earth aluminum garnet-type inorganic oxide, phosphor and light-emitting device using same
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsShozo Oshio, Natsuki Sato
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Abstract
An inorganic oxide of the present invention has a composition represented by General formula (1): M2LnX2(AlO4)3 (where M includes Ca, Ln includes Tb, and X includes at least either one of Zr and Hf). Then, a number of Tb atoms in General formula (1) is 0.1 or more to 1 or less. Moreover, a crystal structure of the inorganic oxide is a garnet structure. A phosphor made of this inorganic oxide is capable of being excited by short-wavelength visible light, and can radiate narrow-band green light.
Claims16
An inorganic oxide comprising:
- a composition represented by General formula:
- M2LnX2(AlO4)3 (1)
- where M includes Ca, Ln includes Tb, and X includes at least either one of Zr and Hf,
- wherein a number of Tb moles in General formula (1) is 0.1 or more to 1 or less, and a crystal structure of the inorganic oxide is a garnet structure.
1 more element
Dependencies are inferred from the claim text.