Phosphor and semiconductor light emitting device using the same

Abstract

A phosphor according to the present disclosure has excellent light emission properties in a blue-green region and high color rendering properties. The phosphor is represented by a chemical formula of Lu(3-x-y-z)MgxZnyAl5O12:Cez, in which when z is in a range of 0.01≤z≤0.03, then 0≤x≤1.4 and 0≤y≤1.4, excluding x=0 and y=0; when z is in a range of is 0.03<z≤0.06, then y<0.2 and 0.1≤x≤1.4, or x<0.2 and 0.1≤y≤1.4, or x=0.2 and y=0.2; when z is in a range of 0.06<z≤0.09, then y<0.2 and 0.1≤x<1.4, or x<0.2 and 0.1≤y<1.4; and when z is in a range of 0.09<z≤0.12, then y<0.2 and 0.1≤x<0.9, or x<0.2 and 0.1≤y<0.9.

Dependencies are inferred from the claim text.