Rare Earth Oxide Particles and Use Thereof in Particular In Imaging
US-2018161461-A1 · Jun 14, 2018 · US
Fluorescent material and light-emitting device
US2016115386A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016115386-A1 |
| Application number | US-201514855174-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 15, 2015 |
| Priority date | Oct 23, 2014 |
| Publication date | Apr 28, 2016 |
| Grant date | — |
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Abstract
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A fluorescent material according to an aspect of the present disclosure mainly comprises a compound represented by AB 0.5-w-x-y-z C w Eu x Sm y Ln z W 0.5 O 3 . A is one or more elements selected from the group consisting of alkaline earth metals and mainly contains Ca. B is one or more elements selected from the group consisting of divalent metals and mainly contains Mg. C is one or more elements selected from the group consisting of alkali metals and mainly contains Li, Na, or Li and Na. Ln is one or more elements selected from the group consisting of rare earth elements excluding Eu and Sm. w, x, y, and z meet the following conditions: 0.05≦w≦0.25, 0.05≦x+y≦0.25, 0.0≦y≦0.02, and w=x+y+z.
First claim
Opening claim text (preview).
What is claimed is: 1 . A fluorescent material mainly comprising a compound represented by AB 0.5-w-x-y-z C w Eu x Sm y Ln z W 0.5 O 3 , where: A is one or more elements selected from the group consisting of alkaline earth metals and mainly contains Ca; B is one or more elements selected from the group consisting of divalent metals and mainly contains Mg; C is one or more elements selected from the group consisting of alkali metals and mainly contains Li, Na, or Li and Na; Ln is one or more elements selected from the group consisting of rare earth elements excluding Eu and Sm; and w, x, y, and z meet the following conditions: 0.05≦w≦0.25; 0.05≦x+y≦0.25; 0.0≦y≦0.02; and w=x+y+z. 2 . The fluorescent material according to claim 1 , wherein w, x, y, and z further meet the following conditions: 0.10≦x+y≦0.20; and 0.002≦y≦0.015. 3 . The fluorescent material according to claim 1 , further comprising 0.5 mol % or more and 5.0 mol % or less of at least one compound selected from the group consisting of alkali metal fluorides, alkaline earth metal fluorides, and alkali metal oxides. 4 . The fluorescent material according to claim 3 , wherein the at least one compound is lithium fluoride. 5 . The fluorescent material according to claim 1 , wherein B contains Mg only, C contains Li or Na only, and Ln is Gd or Y. 6 . The fluorescent material according to claim 1 , wherein A contains Ca only, B contains Mg only, C contains Li only, and Ln is Gd. 7 . The fluorescent material according to claim 1 , wherein the fluorescent material is a sintered body. 8 . A light-emitting device comprising: an excitation light source; and a fluorescent material that emits light by absorbing excitation light emitted from the excitation light source, the fluorescent material mainly comprising a compound represented by AB 0.5-w-x-y-z C w Eu x Sm y Ln z W 0.5 O 3 , where: A is one or more elements selected from the group consisting of alkaline earth metals and mainly contains Ca; B is one or more elements selected from the group consisting of divalent metals, mainly Mg; C is one or more elements selected from the group consisting of alkali metals and mainly contains Li, Na, or Li and Na; Ln is one or more elements selected from the group consisting of rare earth elements excluding Eu and Sm; and w, x, y, and z meet the following conditions: 0.05≦w≦0.25; 0.05≦x+y≦0.25; 0.0≦y≦0.02; and w=x+y+z.
Assignees
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Classifications
Wavelength conversion materials · CPC title
Vanadates; Chromates; Molybdates; Tungstates · CPC title
- C09K11/7794Primary
Vanadates; Chromates; Molybdates; Tungstates · CPC title
Electricity · mapped topic
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- What does patent US2016115386A1 cover?
- A fluorescent material according to an aspect of the present disclosure mainly comprises a compound represented by AB 0.5-w-x-y-z C w Eu x Sm y Ln z W 0.5 O 3 . A is one or more elements selected from the group consisting of alkaline earth metals and mainly contains Ca. B is one or more elements selected from the group consisting of divalent metals and mainly contains Mg. C is one or more eleme…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09K11/7794. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Apr 28 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).