Manganese-and-magnesium-activated strontium sulfide phosphors

Details Manganese-and-magnesium-activated strontium sulfide phosphors Manganese-and-magnesium-activated strontium sulfide phosphors

1975-02-24

1976-08-31

Cooper, Jack

Compositions

Inorganic luminescent compositions

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

C09K 1116

Patent

active

039779912

ABSTRACT:
Manganese-and-magnesium-coactivated strontium sulfide phosphors are both photoluminescent and cathodoluminescent. The incorporation of small amounts (5 to 1000 ppm) of magnesium into manganese-activated strontium sulfide phosphors shifts the CIE emission color coordinates from about x = 0.323 and y = 0.650 for the magnesium-free phoshor to about x = 0.370 and y = 0.611, for the maximum amount of incorporated magnesium.

REFERENCES:
patent: 2475437 (1949-07-01), Stern
patent: 2521124 (1950-09-01), Miller
patent: 2614082 (1952-10-01), Smith
Kroge "Some Aspects of the Luminescence of Solids" Elsevier Publ. Co. 1948, pp. 270-273.

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