Novel methods for preparing rare-earth oxysulfide phosphors, and resulting materials
AssigneeUniversity of Florida Research Foundation, Inc.
InventorsPaul H. Holloway, Mostafa Abboudi
Life of this patent
Estimating the term…
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.
Claims19
A method for synthesizing a rare-earth oxysulfide phosphor wherein said method comprises:
- (a) combining a first rare-earth nitrate salt and a second rare-earth nitrate salt;
- (b) adding a sulfidizing agent to said first and second rare-earth nitrate salts;
- and
- (c) heating.
A rare-earthoxysulifide phosphor produced by a process comprising:
- (a) combining a first earth and nitrate salt and a second rare-earth nitrate salt;
- (b) adding a sulfidizing agent to first and second rare-earth nitrate salts;
- and
- (c) heating.
Dependencies are inferred from the claim text.