Europium-activated barium magnesium aluminate phosphor

Details Europium-activated barium magnesium aluminate phosphor Europium-activated barium magnesium aluminate phosphor

2006-03-21

2006-03-21

Koslow, C. Melissa (Department: 1755)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

C252S30140F

Reexamination Certificate

active

07014792

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)ywhere 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.

REFERENCES:
patent: 6960309 (2005-11-01), Aoki et al.
patent: 1 426 430 (2004-06-01), None
patent: 2003-82344 (2004-03-01), None
patent: WO 03/025089 (2003-03-01), None

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