Oxynitride phosphor and light emitting device

Details Oxynitride phosphor and light emitting device Oxynitride phosphor and light emitting device

2007-06-06

2009-11-03

Koslow, C. Melissa (Department: 1793)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

C313S503000, C257S098000

Reexamination Certificate

active

07611642

ABSTRACT:
The present invention provides an oxynitride phosphor represented by a composition formula M(1)1-jM(2)jSibAlcOdNe(composition formula I) or a composition formula M(1)1-a-jM(2)jCeaSibAlcOdNe(composition formula II) and containing 50% or more of a JEM phase, and a light emitting device including a semiconductor light emitting element emitting an excited light, a first phosphor that is the oxynitride phosphor according to the present invention that absorbs the excited light and emits a fluorescence, and a kind or a plurality of kinds of second phosphor(s) that absorb(s) the excited light and emit(s) a fluorescence having a longer wavelength than the fluorescence emitted by the first phosphor. Thereby, a novel oxynitride phosphor being capable of highly efficiently emitting mainly a light having a wavelength of 510 nm or less and a light emitting device using the same can be provided.

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