Improved uvc-emitting sr(al,mg)12o19:pr phosphor and lamp...

Details Improved uvc-emitting sr(al,mg)12o19:pr phosphor and lamp... Improved uvc-emitting sr(al,mg)12o19:pr phosphor and lamp...

C - Chemistry, Metallurgy

09

K

C09K 11/80 (2006.01) A61L 2/10 (2006.01) C09K 11/55 (2006.01) C09K 11/78 (2006.01) H01J 61/38 (2006.01)

Patent

CA 2538583

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-x Pr x Al12-y Mg y O19 wherein 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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