Europium-activated barium magnesium silicate phosphor

Details Europium-activated barium magnesium silicate phosphor Europium-activated barium magnesium silicate phosphor

1990-11-13

1993-03-16

Cooper, Jack

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

2523014F, 313486, C09K 1159

Patent

active

051943328

ABSTRACT:
The initial power output and maintenance of a fluorescent lamp containing europium-activated barium magnesium silicate phosphor is significantly improved by combining the phosphor with a flux and subjecting the phosphor/flux mixture to a refiring and rewashing process before applying the phosphor to the interior of a fluorescent lamp envelope. Surface concentrations of europium and barium are significantly increased, while surface concentrations of magnesium and silicon are decreased.

REFERENCES:
patent: 3157602 (1964-11-01), Ropp
patent: 3651363 (1972-03-01), Barry
patent: 3676361 (1972-07-01), Datta

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