Luminescent materials

Details Luminescent materials Luminescent materials

1981-11-23

1984-05-01

Cooper, Jack

Compositions

Inorganic luminescent compositions

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

313486, C09K 11463

Patent

active

044460481

ABSTRACT:
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/or aluminium (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.

REFERENCES:
patent: 3650976 (1972-03-01), Luckey
patent: 4007394 (1977-02-01), Rabatin
Peters "J. Electrochem. Soc.", vol. 116, No. 7, pp. 985-989, 1969.

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