| abstract |
The present invention provides a phosphor that emits light of which an emission spectrum has a peak wavelength closer to a wavelength where luminosity becomes maximum. The phosphor includes a composition represented by the formula: (M2x, M3y, M4z)mM1O3X(2/n), wherein M1 is Si and may include at least one element selected Ge, Ti, Zr, and Sn; M2 is Ca and may include at least one element selected Mg, Ba, and Zn; M3 is Sr and may include at least one element selected from the group consisting of Mg, Ba, and Zn; X is at least one kind of halogen element; M4 is Eu2+ and may includes at least one element rare-earth elements and Mn, wherein m is in a range of 6/6!<=m!<=8/6; n is in a range of 5!<=n!<=7; and x, y, and z satisfies x+y+z=1, where 0<x<1, 0<y<1, and 0.01!<=z!<=0.3. |