abstract |
A light-emitting device using a phosphor with favorable temperature characteristics is provided. A light-emitting device includes a light-emitting element that emits light with a wavelength of 250 nm to 500 nm and a phosphor layer disposed on the light-emitting element. The phosphor layer is a phosphor having a composition represented by the following composition formula (A), which exhibits a light emission peak between wavelengths 580 nm and 700 nm when excited with light having a wavelength of 250 nm to 500 nm, and has a CuKα characteristic X X-ray diffraction using a line (wavelength 1.54056Å), simultaneously diffracting at diffraction angles (2θ) of 8.60 to 8.64 °, 11.16 to 11.20 °, 18.26 to 18.30 ° It contains a phosphor exhibiting a peak. MAlSiON (A) (In the composition formula (A), M is Sr, and at least 0.1 mol% thereof is substituted with Eu.) [Selection figure] None |