Europium-activated phosphors containing oxides of rare-earth and group-IIIB metals and method of making the same
Patent
·
OSTI ID:1175686
Europium-activated phosphors comprise oxides of at least a rare-earth metal selected from the group consisting of gadolinium, yttrium, lanthanum, and combinations thereof and at least a Group-IIIB metal selected from the group consisting of aluminum, gallium, indium, and combinations thereof. A method for making such phosphors comprises adding at least a halide of at least one of the selected Group-IIIB metals in a starting mixture. The method further comprises firing the starting mixture in an oxygen-containing atmosphere. The phosphors produced by such a method exhibit improved absorption in the UV wavelength range and improved quantum efficiency.
- Research Organization:
- GE Global Research, Niskayuna, New York (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-99FT40632
- Assignee:
- General Electric Company (Niskayuna, NY)
- Patent Number(s):
- 7,022,263
- Application Number:
- 10/779,086
- OSTI ID:
- 1175686
- Country of Publication:
- United States
- Language:
- English
Lamp Phosphors
|
book | January 1994 |
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