| 摘要 |
To provide a phosphor for manufacturing an one chip type LED illumination, etc, by combining a near ultraviolet/ultraviolet LED and a blue LED, and having an excellent emission efficiency including luminance. The phosphor is given as a general composition formula expressed by MmAaBbOoNn:Z, (where element M is one or more kinds of elements having bivalent valency, element A is one or more kinds of elements having tervalent valency, element B is one or more kinds of elements having tetravalent valency, O is oxygen, N is nitrogen, and element Z is one or more kinds of elements acting as an activator.), satisfying a = (1 + x) × m, b = (4 - x) × m, o = x × m, n = (7 - x) × m, 0 ‰ x ‰ 1, wherein when excited by light in a wavelength range from 300nm to 500nm, the phosphor has an emission spectrum with a peak wavelength in a range from 500nm to 620nm. |
