Phosphor, light-emitting device, illumination device, image display device, and indicator lamp for vehicle

A light-emitting device, comprising a first light emitter, and a second light emitter that emits visible light due to irradiation with light from the first light emitter,

• wherein the second light emitter includes a phosphor that includes a crystal phase having a composition represented by formula [1] below,
• RexMAaMBbMCcNdXe [1]
• wherein in formula [1] above,
• MA includes one or more elements selected from the group consisting of Sr, Ca, Ba, Na, K, Y, Gd, and La,
• MB includes one or more elements selected from the group consisting of Li, Mg, and Zn,
• MC includes one or more elements selected from the group consisting of Al, Si, Ga, In, and Sc,
• X includes one or more elements selected from the group consisting of F, Cl, Br, and I,
• Re includes one or more elements selected from the group consisting of Eu, Ce, Pr, Tb, and Dy, and
• a, b, c, d, e, and x satisfy the following expressions, respectively,
• 0.7≤a≤1.3
• 0.7≤b≤1.3
• 2.4≤c≤3.6
• 3.2≤d≤4.8
• 0.0≤e≤0.2
• 0.0<x≤0.2,
• wherein, when the intensity of a peak that appears in a region where 2θ=38-39° in a powder X-ray diffraction spectrum of the phosphor is designated Ix and the intensity of a peak that appears in a region where 2θ=37-38° is designated Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and
• wherein the phosphor has a short emission peak wavelength of from 620 to 648 nm in an emission spectrum.