abstract |
A phosphor capable of achieving high luminance in a 600 to 680 nm region and a light emitting device having high luminance are provided. A phosphor of the formula (1): Ca p Sr q M m -A a -B b -O t -N n: Eur [M is selected from beryllium and zinc, A is aluminum, gallium, indium, Selected from scandium, yttrium, lanthanum, gadolinium and lutetium, B is selected from silicon, germanium, tin, titanium, zirconium and hafnium, 0 <p <1, 0 <q <1, 0 ≦ m <1, 0 ≦ t ≦ 0.3, 0.00001 ≦ r ≦ 0.1, a = 1, 0.8 ≦ b ≦ 1.2, 2.7 ≦ n ≦ 3.1], and the phosphor is magnesium 20 to Containing 1500 ppm and / or barium 40-5000 ppm, the ratio of each element constituting these phosphors is adjusted to control the concentration of magnesium and barium constituting the phosphors within a certain range. [Selection figure] None |