Invention Grant
- Patent Title: Persistent phosphor
- Patent Title (中): 持久荧光粉
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Application No.: US11954814Application Date: 2007-12-12
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Publication No.: US07959827B2Publication Date: 2011-06-14
- Inventor: Holly Ann Comanzo , Alok Mani Srivastava , William W. Beers , Sergio Paulo Martins Loureiro , Anant Achyut Setlur , Stanley John Stoklosa , Claire S. Henderson
- Applicant: Holly Ann Comanzo , Alok Mani Srivastava , William W. Beers , Sergio Paulo Martins Loureiro , Anant Achyut Setlur , Stanley John Stoklosa , Claire S. Henderson
- Applicant Address: US NY Niskayuna
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Niskayuna
- Agent Mary Louise Gioeni
- Main IPC: C09K11/64
- IPC: C09K11/64 ; C09K11/55

Abstract:
A long-lived phosphor composition is provided, along with methods for making and using the composition. More specifically, in one embodiment, the phosphor comprises a material having a formula of Ax-y-zAl2-m-n-o-pO4:Euy, REz, Bm, Znn, Coo, Scp. In this formula, A may be Ba, Sr, Ca, or a combination of these metals, x is between about 0.75 and 1.3, y is between about 0.0005 and 0.1, z is between about 0.0005 and 0.1, m is between about 0.0005 and 0.30, n is between about 0.0005 and 0.10, o is between about 0 and 0.01 and p is between about 0 and 0.05. RE is Dy, Nd, or a combination thereof. In another embodiment, methods are provided for making persistent phosphors comprising the formulations above. Other embodiments provide applications for such a phosphor, comprising uses in toys, emergency equipment, clothing, and instrument panels, among others.
Public/Granted literature
- US20090152497A1 PERSISTENT PHOSPHOR Public/Granted day:2009-06-18
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