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Title:
PHOSPHOR-CONVERTED LIGHT-EMITTING DEVICE
Document Type and Number:
Japanese Patent JP2012224857
Kind Code:
A
Abstract:

To provide wavelength-converted light emitting devices.

A semiconductor light emitting device is combined with a wavelength converting material. The semiconductor light emitting device is configured to emit first light of a first peak wavelength. The wavelength converting material is configured to absorb at least a portion of the first light and emit second light of a second peak wavelength. In some embodiments, the first wavelength converting material is (Ba1-xSr)2-y-0.5zSi5N8-zOz:Euy2+ where 0.2<X<0.3, (BA1-xCax)2-y-0.5zSi5N8-zOz:Euy2+ where 0.01<X<0.2, or M2Si5-aAaN8-aOa:Eu2+ where M=Sr, Ba, Ca; A=Al, B, Ga, Sc; and 0.01<a<0.2.


Inventors:
MUELLER GERD O
MUELLER-MACH REGINA B
MEYER JOERG
SCHMIDT PETER J
WIECHERT DETLEF U
Application Number:
JP2012138030A
Publication Date:
November 15, 2012
Filing Date:
June 19, 2012
Export Citation:
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Assignee:
PHILIPS LUMILEDS LIGHTNG CO LLC
KONINKL PHILIPS ELECTRONICS NV
International Classes:
C09K11/64; C09K11/08; C09K11/59; C09K11/62; C09K11/80; H01L33/50
Domestic Patent References:
JP2004134805A2004-04-30
JP2004134805A2004-04-30
Foreign References:
WO2004055910A12004-07-01
WO2004084261A22004-09-30
WO2004055910A12004-07-01
WO2004084261A22004-09-30
Attorney, Agent or Firm:
Sadao Kumakura
Fumiaki Otsuka
Disciple Maru Ken
Ino Sato



 
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