Zinc silicate phosphor with extended florescence decay and catho

Details Zinc silicate phosphor with extended florescence decay and catho Zinc silicate phosphor with extended florescence decay and catho

1980-12-15

1982-02-09

Cooper, Jack

Electric lamp and discharge devices

Cathode ray tube

Screen

2523016F, C09K 1144

Patent

active

043151906

ABSTRACT:
A white bodied green-emitting phosphor having improved persistence and brightness comprises manganese activated zinc silicate incorporating arsenic and an alkali metal wherein the arsenic to zinc atom ratio ranges between about 0.00005 to about 0.001 and wherein the alkali metal is present in an amount of between about 0.5 to about 2.0 times the concentration of arsenic present in the phosphor.

REFERENCES:
patent: 2176099 (1939-10-01), Pfanstiehl
patent: 2205815 (1940-06-01), Foulke
patent: 2206280 (1940-07-01), Froelich
patent: 2238026 (1941-04-01), Moore
patent: 2247192 (1941-06-01), Fonda
patent: 2252500 (1941-08-01), Fonda
patent: 2554999 (1951-05-01), Merrill et al.
patent: 3416019 (1968-12-01), Kaduk
patent: 3568635 (1971-06-01), Vanik et al.
patent: 3644212 (1972-02-01), McAllister et al.
Froelich et al., "J. Phys. Chem.", 46, 878-885, (1942).
Gashurov et al., "J. Electrochem. Soc.: Solid State Science", 114, 378-381, (1967).
Wilke, "Zeitschrift Fur Physikalische Chemie", 224: 51-56, (1963).

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