INORGANIC RED PHOSPHOR AND LIGHT EMITTING DEVICES COMPRISING SAME

摘要

The present invention relates to a phosphor comprising an inorganic light emitting compound represented by M(I)_cM(II)_aSi_5N_xC_yO_z:Eu^(2+)_b, where the phosphor exhibits an emission spectrum resolvable into a first Gaussian emission curve and a second Gaussian emission curve; the first Gaussian emission curve has a first Gaussian emission curve peak P_1; the first Gaussian emission peak P_1 has peak 1 height H_(P1), peak 1 peak wavelength P[λ]_(P1), and peak 1 area A_(P1); the second Gaussian emission curve has a second Gaussian emission peak P_2; the second Gaussian emission peak P_2 has peak 2 height H_(P2), peak 2 peak wavelength P[λ]_(P2), peak 2 full width at half max FWHM_(P2), and peak 2 area A_(P2); P[λ]P1 < P[lλ]P2 is satisfied; and the peak 2 full width at half max FWHM_(P2) is minimized.