Patent ID: 7884539
Filing Date: 2011-02-08
Classification: C09K,Y02B

Abstract:
1. A phosphor emitting a light when a monochromatic excitation light in a range from 250 nm to 550 nm is irradiated thereon, wherein a luminescence intensity at an excitation wavelength where an intensity of a spectrum of emitting the light by absorbing the excitation light becomes maximum is defined as P the phosphor is represented by a composition formula MmAaBbNn:Z, where the element M is one or more kind of divalent elements, the element A is one or more kind of trivalent elements, the element B is one or more kind of tetravalent elements, N is nitrogen, and the element Z is an activator, satisfying n=(⅔)m+a+(4/3)b and m=a=b=1.