Phosphor of green luminescence

Details Phosphor of green luminescence Phosphor of green luminescence

1999-01-28

2000-10-10

Koslow, C. Melissa

Compositions

Inorganic luminescent compositions

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

2523014R, C09K 1100

Patent

active

061298603

ABSTRACT:
The present invention relates to a novel phosphor of green luminescence and more particularly, to the phosphor of green luminescence containing Tb(terbium) as an activator and a perovskite-structure(CaSnO.sub.3) as a host compound, which may emit a luminescent spectrum in the visible range, when excited by electron beam. Since the phosphor of green luminescence of this invention has better emission intensity than the conventional phosphors, it has been widely applicable to the display industry including an electronic display such as cathode-ray tube and field emission display, in spite of the fact the use of Tb, a high-priced rare earth element, is minimized without any sulfur(S) in its chemical composition.

REFERENCES:
patent: 2569940 (1951-10-01), Lyon
patent: 2570136 (1951-10-01), Lyon
Journal of the Electrochemical Society, vol. 136, No. 6, "Degradation Mechanism for Low Voltage Cathodoluminescence of Sulfide Phosphors", Shigeo Itoh, et al., pp. 1819-1823, Jun. 1989.
Chemical Physics Letters, vol. 113, No. 3, .sup.5 D.sub.3 -.sup.5 D.sub.4 Cross-Relaxation of Tb.sup.3+ IN .alpha.-GdOF, P.A.M. Derdowski et al. pp. 387-390, Jan. 18, 1985.

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