| abstract |
A phosphor for producing a one-chip type white LED light or the like in combination with a near-ultraviolet or ultraviolet LED or a blue LED, and provides a phosphor having excellent luminous efficiency including luminance. General formula MmAaBbOoNn: Z (M element is at least one element having a valence of valence II, A element is at least one element having valence of valence III, element B is at least one element having valence of valence IV, O is In the phosphor represented by oxygen, N is nitrogen, and element Z is at least one activator.), A = (1 + x) x m, b = (4-x) x m, o = x × m, n = (7-x) x m, O≤x≤1, and when excited in light in the range of 300 nm to 500 nm, the peak wavelength in the emission spectrum is in the range of 500 nm to 620 nm. It is to be done. |