| abstract |
Provided is a phosphor characterized by being represented by the composition of formula (1). Formula (1): (Sr a ,Ba b ,Ca c ,Eu x ,M 1 n d ,M 2 n e )SiO f ∙gMgO. (In the formula, M 1 represents at least one group 3 element selected from Lu and Sc; M 2 represents an alkali metal element selected from Li, Na, and K; 0<a≤2; 0<b≤2; 0≤c≤2; 0.0015≤d≤0.045; 0≤e≤0.06; 0<x≤0.1; 3.7≤f≤4.1; and 0≤g≤1.) Also provided is a light-emitting device characterized by comprising the phosphor and a light source that irradiates the phosphor with excitation light such that the phosphor emits light. |