Phosphors with long-persistent green phosphorescence
Overview
Citations
- General Electric (1)
-
| Number |
Title |
Issue Date |
| 4623816 |
Fluorescent lamp using multi-layer phosphor coating |
1986/11/18 |
- Nemoto & Co. (1)
-
| Number |
Title |
Issue Date |
| 5424006 |
Phosphorescent phosphor |
1995/06/13 |
Abstract
Abstract
This invention relates to phosphors including long-persistence green phosphors. Phosphors of the invention are represented by the general formula: M.sub.k Al.sub.2 O.sub.4 :2xEu.sup.2+,2yR.sup.3+ wherein k-1-2x-2y, x is a number ranging from about 0.0001 to about 0.05, y is a number ranging from about x to about 3x, M is an alkaline earth metal, and R.sup.3+ is one or more trivalent metal ions. Phosphors of this invention include powders, ceramics, single crystals and single crystal fibers. A method of manufacturing improved phosphors and a method of manufacturing single crystal phosphors are also provided.
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Tech Analysis
| Class |
Subclass |
Type |
Reference Factor |
Citation Factor |
Strength |
Grant time |
Early grant (%) |
|
117
|
946
|
Declining |
Average |
Average |
Medium High |
Average |
71.1 |
|
252
|
301.4R
|
Emerging |
Novel |
Seminal |
High |
Average |
53.3 |