Small-sized lanthanum cerium terbium phosphate phosphors and met

Details Small-sized lanthanum cerium terbium phosphate phosphors and met Small-sized lanthanum cerium terbium phosphate phosphors and met

1996-09-20

1997-07-29

Bonner, Melissa

Compositions

Inorganic luminescent compositions

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

2523014R, C09K 1181

Patent

active

056519206

ABSTRACT:
Small-sized, high brightness (La,Ce,Tb) PO.sub.4 phosphors having an average particle size of less than about 4.0 microns can be made by adding boric acid and lithium carbonate to the rare earth phosphate co-precipitate prior to firing. The small-sized, high brightness phosphors have a brightness equivalent to or greater than larger-sized phosphors of the same composition.

REFERENCES:
patent: 5091110 (1992-02-01), Fan et al.
patent: 5106532 (1992-04-01), Chau
patent: 5132042 (1992-07-01), Chau et al.
patent: 5314641 (1994-05-01), Collin et al.
patent: 5340556 (1994-08-01), Collin et al.

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