Phosphor with extended fluorescence decay lifetime and lamp base

Details Phosphor with extended fluorescence decay lifetime and lamp base Phosphor with extended fluorescence decay lifetime and lamp base

1980-03-31

1981-12-15

LaRoche, Eugene R.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

2523014P, 2523016P, H01J 6144, C09K 1108

Patent

active

043061737

ABSTRACT:
A luminescent phosphor composition having enhanced luminescent decay lifetime consists essentially of a non-stoichiometric tin and manganese coactivated alkaline earth orthophosphate represented by the formula

REFERENCES:
patent: 2619471 (1952-11-01), Butler
patent: 2774738 (1956-12-01), Butler
patent: 2776261 (1957-01-01), Shaffer et al.
patent: 2786034 (1957-03-01), Butler
patent: 3396118 (1968-08-01), Datta
patent: 4174294 (1979-11-01), Murakami et al.
patent: 4266160 (1981-05-01), Chenot
Kroger, A Proof of the Associated-Pair Theory for Sensitized Luminophors, Physica, XV (8-9), Sep. 1949, pp. 801-806.
Butler, Alkaline Earth Orthophosphate Phosphors, J. Electrochem. Soc., 100, May 1953, pp. 250-255.
Koelmans et al., Luminescence of Modified Tin-Activated Strontium Orthophosphate, J. Electrochem. Soc., 104, Jul. 1957, pp. 442-445.
Sarver et al., Phase Equilibria and Tin-Activated Luminescence in Strontium Orthophosphate Systems, J. Electrochem. Soc. 108, Dec. 1961, pp. 1103-1110.

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