Titanium-activated lanthanum oxysulfide phosphor and method of p

Details Titanium-activated lanthanum oxysulfide phosphor and method of p Titanium-activated lanthanum oxysulfide phosphor and method of p

1974-12-23

1976-04-06

Cooper, Jack

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

2523014F, C09K 1146, C09K 1114

Patent

active

039487989

ABSTRACT:
An orange broad-band emitting phosphor is a titanium-activated lanthanum oxysulfide containing up to about 0.05 moles of titanium per mole of lanthanum oxysulfide host. The phosphor is prepared by incorporating titanium oxide in the desired ratio to lanthanum into the mixture at the time the lanthanum is sulfurized in the presence of an alkali metal carbonate, to form lanthanum oxysulfide.

REFERENCES:
patent: 3418246 (1968-12-01), Royce
patent: 3502590 (1970-03-01), Royce et al.

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