| abstract |
There is provided a phosphor having a β-type Si 3 N 4 crystal structure including oxynitride expressed by an empirical formula Si 6-z Al z O z N 8-z :Eu a ,M b , M being at least one selected from among strontium (Sr) and barium (Ba), an amount (a) of europium (Eu) ranging from 0.1 to 5 mol %, an amount (b) of M ranging from 0.1 to 10 mol %, and a composition rate (z) of aluminum (Al) satisfying 0.1<z<1, and the phosphor emitting light having a peak wavelength ranging from 500 to 550 nm when excitation light is irradiated thereto. |