Red emitting phosphor with slow exponential decay

Details Red emitting phosphor with slow exponential decay Red emitting phosphor with slow exponential decay

1980-03-31

1981-12-22

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

043073212

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

REFERENCES:
patent: 2619471 (1952-11-01), Butler
patent: 2774738 (1956-12-01), Butler
patent: 2786034 (1957-03-01), Butler
patent: 3396118 (1968-08-01), Datta
patent: 3609094 (1971-09-01), Shaffer
patent: 3836477 (1974-09-01), Lages
patent: 4174294 (1979-11-01), Murakami et al.
Kroger, A Proof of the Associated-Pair Theory for Sensitized Luminophors, Physica, XV (8-9), Sep. 1949, p. 801-806.
Butler, Alkaline Earth Orthophophate Phosphors, J. Electrochem. Soc. 100, May 1953, pp. 250-255.
Koelmans et al. Luminescence of Modified Tin-Activated Strontium Orthophsophate, J. Electrochem Soc., 104, Jul. 1957, p. 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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