Alkali metal alkaline earth metal sulfate phosphor activated...

C - Chemistry – Metallurgy – 09 – K

Patent

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31/126, 117/22

C09K 11/77 (2006.01)

Patent

CA 1063795

ABSTRACT OF THE DISCLOSURE Mixed rare earth alkali metal and alkaline earth sulfates activated with cerium and terbium are used as a phosphor coating system for fluorescent lamps. The phosphor efficiently emits light in the green region and the emission spectrum of the phosphor demonstrates a prominent peak in the 520-560 nm region with minor inflections at other visible wavelengths.

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