Patent ID: 8703019

Claim:
A phosphor comprising a crystal phase having a chemical composition expressed by the general formula [31]: (Eu y M II 1−y M III M IV N 3 ) 1−x′ (AM IV 2 N 3 ) x′ [31] wherein in the general formula [31], M II represents divalent metal elements including Mg, Ca, Sr, Ba, and Zn at a ratio of 90 mol % or more in total; M III represents trivalent metal elements including Al at a ratio of 80 mol % or more; M IV represents tetravalent metal elements including Si at a ratio of 90 mol % or more; A represents one or more metal elements selected from Li, Na, and K; x′ satisfies 0<x′<1.0; y satisfies 0<y 0.2.