Electrophotographic deposition of unpackaged semiconductor device
US-2015357526-A1 · Dec 10, 2015 · US
Europium, and yttrium oxide or gadolinium oxide core/shell composition, phosphor including said composition, and methods for preparing same
US9045679B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9045679-B2 |
| Application number | US-201013262099-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 25, 2010 |
| Priority date | Mar 30, 2009 |
| Publication date | Jun 2, 2015 |
| Grant date | Jun 2, 2015 |
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Abstract
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A composition including an inorganic core and a europium and yttrium oxide or gadolinium shell uniformly covering the inorganic core at a thickness greater than or equal to 300 nm is described. A phosphor including the composition is also described. In addition a process of forming the composition by: forming a suspension including the inorganic core with pH of 8 to 11; adding a solution including a europium salt and yttrium or gadolinium salt to the suspension and maintaining the pH of the reaction medium at a constant value; and separating the formed solid and calcining the same to a temperature of at most 1000° C. is described.
First claim
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The invention claimed is: 1. A composition, comprising: a mineral core comprising a material selected from the group consisting of lanthanum orthophosphate and gadolinium orthophosphate; and a shell based on europium oxide and on yttrium oxide or gadolinium oxide and homogeneously covering the mineral core over a thickness equal to or greater than 300 nm. 2. The composition as claimed in claim 1 , wherein the mineral core is comprised of material having a…
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- What does patent US9045679B2 cover?
- A composition including an inorganic core and a europium and yttrium oxide or gadolinium shell uniformly covering the inorganic core at a thickness greater than or equal to 300 nm is described. A phosphor including the composition is also described. In addition a process of forming the composition by: forming a suspension including the inorganic core with pH of 8 to 11; adding a solution includ…
- Who is the assignee on this patent?
- Buissette Valérie, Le-Mercier Thierry, Rhodia Operations
- What technology area does this patent fall under?
- Primary CPC classification H10H20/80. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 02 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).