Method of manufacturing phosphor translucent ceramics and light emitting devices
AssigneeNitto Denko Corporation
InventorsJames C. Shih, Hiroaki Miyagawa
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Abstract
Disclosed herein is a method of increasing the luminescent efficiency of a translucent phosphor ceramic. Other embodiments are methods of manufacturing a phosphor translucent ceramic having increased luminescence. Another embodiment is a light emitting device comprising a phosphor translucent ceramic of one of these methods.
Claims28
A method of increasing the luminescence efficiency of a translucent phosphor ceramic, comprising:
- sintering a ceramic phosphor precursor in a non-oxidizing atmosphere at a temperature of at least about 1700° C. thereby increasing the luminescence efficiency.
A method of manufacturing a phosphor translucent ceramic having increased luminescence comprising:
- sintering a ceramic phosphor precursor.
The method of claim 225 wherein ceramic phosphor precursor comprises YAG:Ce powder.
A method of manufacturing a phosphor translucent ceramic having increased luminescence comprising:
- heating a ceramic phosphor precursor at a temperature of at least about 1200° C. under a reducing atmosphere.
Dependencies are inferred from the claim text.