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Emissive ceramic materials having a dopant concentration gradient and methods of making and using the same
US9102875B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9102875-B2 |
| Application number | US-201414446175-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 29, 2014 |
| Priority date | Dec 1, 2010 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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Disclosed herein are emissive ceramic materials having a dopant concentration gradient along a thickness of a yttrium aluminum garnet (YAG) region. The dopant concentration gradient may include a maximum dopant concentration, a half-maximum dopant concentration, and a slope at or near the half-maximum dopant concentration. The emissive ceramics may, in some embodiments, exhibit high internal quantum efficiencies (IQE). The emissive ceramics may, in some embodiments, include porous regions. Also disclosed herein are methods of make the emissive ceramic by sintering an assembly having doped and non-doped layers.
First claim
Opening claim text (preview).
What is claimed is: 1. An emissive ceramic comprising a yttrium aluminum garnet (YAG) region and a dopant having a concentration gradient along a thickness of the YAG region between a first surface and a second surface, wherein said concentration gradient comprises a maximum dopant concentration, a first half-maximum dopant concentration, and a first slope at or near the first half-maximum dopant concentration, wherein an absolute value of the first slope is in the range of about 0…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US9102875B2 cover?
- Disclosed herein are emissive ceramic materials having a dopant concentration gradient along a thickness of a yttrium aluminum garnet (YAG) region. The dopant concentration gradient may include a maximum dopant concentration, a half-maximum dopant concentration, and a slope at or near the half-maximum dopant concentration. The emissive ceramics may, in some embodiments, exhibit high internal qu…
- Who is the assignee on this patent?
- Nitto Denko Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K11/7774. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 11 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).