Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1979-02-16
1980-07-29
Cooper, Jack
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
2523014R, 2523014P, 2523014F, 428539, C09K 1146
Patent
active
042152895
ABSTRACT:
Luminescent material having a host lattice comprising, as one of the main constituents, at least one of the elements Y, La and the lanthanides. The material is activated by Gd, and, in addition by one or more of the elements Pb, Tl, Sb, Pr and Bi and comprises one or more of the elements Mn, Tb, Eu, Dy and Sm and the third activator. These materials have an efficient emission originating from the third activator and are used in low-pressure mercury vapour discharge lamps.
REFERENCES:
patent: 3523091 (1970-08-01), McAllister
patent: 3909443 (1975-09-01), Shaffer et al.
patent: 4093890 (1978-06-01), Verriet et al.
patent: 4151443 (1979-04-01), Van Den Boom et al.
patent: 4162232 (1979-06-01), Yale
Schwarz, "Inorg. Nucl. Chem. Letters," vol. 3, pp. 231-236, 1967.
Boogerd Gert M.
De Hair Johannes T. W.
Cooper Jack
Spain Norman N.
U.S. Philips Corporation
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