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US 8,007,686 B2Granted
Nitride red phosphors and white light emitting diode using rare-earth-co-doped nitride red phosphors
AssigneeKorea Institute of Energy Research
InventorsJoo-Seok Park, Bo-Yoon Jang, Soon-Jae Yu, Joon-Soo Kim
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Abstract
Disclosed are nitride red phosphors and white light emitting diodes using the same. More particularly, the present invention provides a nitride red phosphor with easily controlled composition of phosphor fraction and improved uniformity and color gamut thereof, a method for preparation thereof, a white light emitting diode with excellent color rendition and high light emitting efficiency, and a white light emitting diode package using the same.
Claims17
A nitride red phosphor represented by the following formula 1:
- Ba2-xRexAlySi5-yN8 [Formula 1]
- wherein x and y as molar ratios are defined by 0.0001≦x≦1.0 and 0.001≦y≦5.0, respectively;
- and Re is at least one selected from rare-earth elements or transition metal elements.
Dependencies are inferred from the claim text.