C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/123
C09K 11/77 (2006.01) G21K 4/00 (2006.01)
Patent
CA 1158429
RECRYSTALLIZATION OF ACTIVATED RARE-EARTH OXYHALIDE PHOSPHORS Abstract A method for the recrystallization of an activated rare-earth oxyhalide phosphor is disclosed. The method comprises recrystallizing the phosphor by firing a phosphor-flux mixture in an inert atmosphere. The phosphor-flux is substantially homogeneous and the flux contains substantially dehydrated magnesium halide. One particularly preferred phosphor made by the method is a lanthanum oxychloride phoxphor coactivated with bismuth and ytterbium. This phosphor made by the present method had high speed and low afterglow.
377715
Luckey George W.
Towers Christine M.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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