Phosphor and light emitting device having the same

A light emitting device comprising:

• a light emitting chip;
• a first phosphor that emits light of the first peak wavelength by a light emitted from the light emitting chip as an excitation wavelength;
• a second phosphor that emits light from the second peak wavelength by the light emitted from the light emitting chip as an excitation wavelength,
• wherein the first and second peak wavelengths have a different color,
• wherein the second phosphor includes a phosphor composition of a M4D1-xOyF:Ax structure containing a divalent metal (M), an elements (A) of the active agent, a fluorine or fluor (F) and an oxygen (O), and,
• wherein the x satisfies a range of 0.001≤x≤0.1, and the y satisfies a range of 1≤y≤5,
• wherein the M is at least one of Mg, Ca, Sr, Ba and Zn,
• wherein the D is at least one of Si, Ge, Sn, Ti, Zr and Hf,
• wherein the F is fluorine,
• wherein the A comprises at least one of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb, and
• wherein the second peak wavelength emitted from the second phosphor has a peak wavelength of a of 400 nm to 470 nm and has a FWHM of less than 20 nm.