Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Patent
1980-06-23
1981-10-20
Cooper, Jack
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C09K 11463
Patent
active
042959896
ABSTRACT:
A cubia, yttria stabilized halnia phosphor, doped with Ce.sup.3+, has been iscovered. The phosphor has a blue luminescence, peaking at about 4200 A, with a secondary peak in the 3800-4000 A region. The optimum composition is 3hfO.sub.2 :Y.sub.2 O.sub.3 :Ce.sup.3+ where the Ce.sup.3+ dopant ranges from 0.1-1.0 weight %.
REFERENCES:
patent: 3640887 (1972-02-01), Anderson
patent: 3715611 (1973-02-01), Hijman et al.
patent: 4014812 (1977-03-01), Kelsey et al.
patent: 4088599 (1978-05-01), Suzuki et al.
Rao "Solid State Chemistry", Marcel Dekker Inc., N.Y., 1974, p. 33.
Addamiano Arrigo
Allen Roger
Klein Philipp H.
Branning A. L.
Cooper Jack
McDonnell T. E.
Sciascia R. S.
The United States of America as represented by the Secretary of
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