Methods for preparing rare-earth oxysulfide phosphors, and...

Details Methods for preparing rare-earth oxysulfide phosphors, and... Methods for preparing rare-earth oxysulfide phosphors, and...

2005-01-18

2005-01-18

Koslow, C. Melissa (Department: 1755)

Compositions

Inorganic luminescent compositions

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

Reexamination Certificate

active

06843938

ABSTRACT:
The present invention provides new and useful methods for preparing rare-earth oxysulfide phosphors. Advantageously, in accordance with the methods of the subject invention, rare-earth oxysulfide phosphors can be prepared with lower reaction temperatures and fewer processing steps than methods currently in use. In a preferred embodiment, the process of the subject invention involves blending two different rare-earth nitrate salts and a sulfidizing agent. Then, the mixture is heated at relatively low temperatures until the rare-earth oxysulfide phosphor is produced.

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Chen, Jing-Ran, Maria T. Dunlay, Richard N. Zare (Mar. 15, 2000) “Macroporous Photopolymer Frits for Capillary Electochromatography”Anal. Chem. 72(6):1224-1227.
Valaskovic, Gary A. et al. (Oct. 15, 1995) “Attomole-Sensitivity Electrospray Source for Large-Molecule Mass Spectrometry”Anal. Chem. 67(20):3802-3805.

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