Strontium-calcium fluorapatite phosphors

Details Strontium-calcium fluorapatite phosphors Strontium-calcium fluorapatite phosphors

C - Chemistry, Metallurgy

09

K

313/136, 31/179

C09K 11/76 (2006.01) H01J 61/44 (2006.01)

Patent

CA 1145133

-9- ABSTRACT A fluorescent lamp can incorporate a new strontium- calcium fluorapatite of the formula Ca5.0-a-w-x-y Sra Cdw Mnx Sby (PO4)3 F1-y Oy wherein a is from about 0.25 to about 4.74-w-x-y w is from 0 to aobut 0.2 x is from about 0.05 to about 0.5 y is from about 0.02 to about 0.2 The compositions have unexpected chromaticity properties. D-22,297

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