Praseodymium-doped luminescent compositions

Details Praseodymium-doped luminescent compositions Praseodymium-doped luminescent compositions

1992-06-22

1993-12-28

Cooper, Jack

Compositions

Inorganic luminescent compositions

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

C09K 1180

Patent

active

052736814

ABSTRACT:
Phosphorescent compositions of the formula Pr.sub.x SrM.sub.1-x AlO.sub.4, wherein M is lanthanum or gadolinium and x is in the range of about 0.025-0.075, are prepared by the reaction of appropriate proportions of aluminum nitrate, strontium carbonate, gadolinium(III) oxide or lanthanum(III) oxide and a praseodymium oxide. They emit light in the red and green regions of the visible spectrum.

REFERENCES:
Ropp "J. of the Electrochem. Soc.", vol. 11, No. 3, pp. 311-317, 1964.
Hooge "J. Chem. Phys.", 45(12), pp. 4504-4509, 1966.
Ozawa et al "Jap. J. Appl. Phys.", vol. 7, No. 11, pp. 1354-1360, 1968.
Porotnikov et al "Chem. Abstracts", vol. 100, 1984, 42233s.

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