Luminescent barium-hexa-aluminate, luminescent screen provided w

Details Luminescent barium-hexa-aluminate, luminescent screen provided w Luminescent barium-hexa-aluminate, luminescent screen provided w

1988-04-01

1989-05-02

Cooper, Jack

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

2523014R, 428690, 313487, C09K 1164

Patent

active

048271870

ABSTRACT:
Luminescent Eu.sup.2+ activated barium-hexa-aluminate mainly having the crystal structure of .beta.'-alumina and being defined by the formula (x-p)BaO.pEuO.(6-0.67x)Al.sub.2 O.sub.3 in which 0.90.ltoreq.x.ltoreq.1.22 and 0.005.ltoreq.p.ltoreq.0.25 and in which 1 to 20 mol % of the BaO is replaced by at least one of the oxides CaO and 0.67Li=.sub.2 O, exhibits improved performance as a blue line emitter.

REFERENCES:
patent: 4110660 (1978-08-01), Wolfe
patent: 4733126 (1988-03-01), Yamakawa et al.

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