Recrystallization of activated rare-earth oxyhalide phosphors

Details Recrystallization of activated rare-earth oxyhalide phosphors Recrystallization of activated rare-earth oxyhalide phosphors

1980-06-11

1982-01-19

Cooper, Jack

Chemistry: physical processes

Physical processes

Crystallization

2523014H, C09K 1146

Patent

active

043114873

ABSTRACT:
A method for the recrystallization of activated rare-earth oxyhalide phosphors 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 phosphor coactivated with bismuth and ytterbium. This phosphor made by the present method has high speed and low afterglow.

REFERENCES:
patent: 2729605 (1956-01-01), Swindells
patent: 3591516 (1971-07-01), Rabatin
patent: 3607770 (1971-09-01), Rabatin
patent: 3667921 (1972-06-01), Grodkiewicz et al.
patent: 4068129 (1978-01-01), Rabatin
patent: 4080306 (1978-03-01), Ferretti
Matsubara, "Mat. Res. Bull.", vol. 7, pp. 963-969, 1972.
Mazza et al., "Gazzetta-Chimica Italiana", 70, pp. 57-72, 1940.

Affiliated with

Also associated with

Rating

Recrystallization of activated rare-earth oxyhalide phosphors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recrystallization of activated rare-earth oxyhalide phosphors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recrystallization of activated rare-earth oxyhalide phosphors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1913550