Patent ID: 9127203
Filing Date: 2015-09-08
Classification: C04B,C09K

Abstract:
1. A phosphor having a β-type Si 3 N 4 crystal structure and 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 in when excitation light is irradiated thereto, wherein M is a dopant of the phosphor and is disposed in an interstitial space of the phosphor.