Warm-color complex phosphor, wavelength converter and light emitting device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMitsuru NITTA, Shozo OSHIO
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Abstract
Awarm-color complex phosphor includes: a Ce3+-activated orange phosphor that has an excitation peak within a blue wavelength range of 440 nm or more and less than 480 nm and has a fluorescence peak within an orange wavelength range of 580 nm or more and less than 610 nm; and a Ce3+-activated red phosphor that has an excitation peak within a green wavelength range of 500 nm or more and less than 550 nm and has a fluorescence peak within a red wavelength range of 610 nm or more and less than 660 nm. Preferably, the Ce3+-activated red phosphor is a nitride-based compound.
Claims17
A warm-color complex phosphor comprising:
- a Ce3+-activated orange phosphor that has an excitation peak within a blue wavelength range of 440 nm or more and less than 480 nm and has a fluorescence peak within an orange wavelength range of 580 nm or more and less than 610 nm;
- and
- a Ce3+-activated red phosphor that has an excitation peak within a green wavelength range of 500 nm or more and less than 550 nm and has a fluorescence peak within a red wavelength range of 610 nm or more and less than 660 nm.
Dependencies are inferred from the claim text.