Europium-activated barium magnesium aluminate phosphor
US7014792B2 · kind B2 · utility
6Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2003 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Jan 13, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/77344
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A europium-activated barium aluminate phosphor is described wherein the phosphor is doped with tetravalent ions of Hf, Zr, or Si. Preferably, the phosphor is represented by (Ba1−xEux)MgAl10O17:(Hf,Zr,Si)y where 0.05≦x≦0.25 and 0<y≦0.05. The tetravalent dopant ions are shown to enhance the stability of the phosphor in UV/VUV applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.