UVC-emitting Sr(Al,Mg) 12 O 19 :Pr phosphor and lamp...

Details UVC-emitting Sr(Al,Mg) 12 O 19 :Pr phosphor and lamp... UVC-emitting Sr(Al,Mg) 12 O 19 :Pr phosphor and lamp...

2005-06-07

2008-10-14

Koslow, C. Melissa (Department: 1793)

Compositions

Inorganic luminescent compositions

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

C313S486000, C313S607000, C313S635000, C313S643000, C313S495000, C313S494000

Reexamination Certificate

active

07435358

ABSTRACT:
The UVC emission of a Sr(Al,Mg)12O19:Pr is improved by providing an excess of magnesium relative to the molar amount praseodymium In particular, the UVC-emitting phosphor has a composition represented by the formula Sr1-xPrxAl12-yMgyO19wherein y>x. The phosphor is excited by vacuum ultraviolet radiation and may be used to create a mercury-free germicidal lamp.

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