Luminescent materials

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C - Chemistry, Metallurgy

09

K

313/80

C09K 11/08 (2006.01) C09K 11/77 (2006.01) H01J 61/44 (2006.01)

Patent

CA 1164924

-11- ABSTRACT OF THE DISCLOSURE A phosphor for use in fluorescent lamps which comprises calcium sulphate and, optionally, up to 50% of strontium sulphate together with cerium (0.5-10%), manganese (up to 10%), an alkali metal (0.001 to 3%) and boron and/oraluminium (0.001 to 8%). The phosphor may be produced by blending and then firing the individual components. Tubes for use in the lamps may be electrostatically coated with the phosphor.

389167

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