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US 10,717,657 B2Granted
Phosphor containing Ce
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMitsuru Nitta, Yasuhisa Inada, Nobuaki Nagao
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Abstract
A phosphor contains a crystal phase having a chemical composition CexM3-x-yβ6γ11-z. M is one or more elements selected from the group consisting of Sc, Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. β contains Si in an amount of 50 mol % or more of a total mol of β. β further contains Al. γ contains N in an amount of 80 mol % or more N of a total mol of γ. x satisfies 0<x≤0.6. y satisfies 0≤y≤1.0. z satisfies 0≤z≤1.0.
Claims17
A phosphor comprising a crystal phase having a chemical composition CexM3-x-yβ6γ11-z, where
- M is one or more elements selected from the group consisting of Sc, Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu;
- β contains Si in an amount of 50 mol % or more of a total mol of β;
- β further contains Al;
- γ contains N in an amount of 80 mol % or more of a total mol of γ;
- 0<x≤0.6;
- 0≤y≤1.0;
- and
- 0≤z≤1.0.
5 more elements
A light-emitting apparatus comprising:
- an excitation light source emitting light of a wavelength of 600 nm or less;
- and
- a phosphor that is irradiated with the light emitted by the excitation light source and emits fluorescence having a wavelength longer than a wavelength of the light emitted by the excitation light source, wherein
- the phosphor comprises a crystal phase having a chemical composition CexM3-x-yβ6γ11-z, where
- M is one or more elements selected from the group consisting of Sc, Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu;
- β contains Si in an amount of 50 mol % or more of a total mol of β;
- β further contains Al;
- γ contains N in an amount of 80 mol % or more of a total mol of γ;
- 0<x≤0.6;
- 0≤y≤1.0;
- and
- 0≤z≤1.0.
9 more elements
Dependencies are inferred from the claim text.