A white light emitting device comprising: a light emitting element having a peak wavelength in the range of 430-460 nm; and formed above the light emitting element, a fluorescent layer containing (i) a red fluorescent material having a composition of the formula: A a (M 1- s,Mn s)F b wherein A is at least one element selected from K and Cs, M is at least one element selected from Si and Ti, and a, b, and s are numerical values satisfying 1.7 ≤ a ≤ 2.1, 5.3 ≤ b ≤ 6.3, and 0 < s ≤ 0.05; and which RFM has - a peak wavelength (λp) of 625-635 nm, - an effective wavelength width of a spectrum for light emitted from the fluorescent material of 15-45 nm, and - an external quantum efficiency (η) of 40-75%; and (ii) a green-yellow fluorescent material (GYFM) having a composition of formula: (Ba x,Sr 1-z,Ca y,Eu z) e SiO f wherein e, f, x, y, and z are numerical values satisfying 1.9 ≤ e ≤ 2.1, 3.6 ≤ f ≤ 4.1, 0.15 ≤ x ≤ 0.4, 0 ≤ y ≤ 0.1 0 < z ≤ 0.15; and which GYFM has - a peak wavelength (λp) of 545-565 nm - a full width at half maximum of light emitted from the fluorescent material (FWHM) of 90-125 nm, and - an external quantum efficiency (η) of 70-90%, wherein the fluorescent layer is formed by dispersing the RFM and the GYFM in a resin. a light emitting element having a peak wavelength in the range of 430-460 nm; and formed above the light emitting element, a fluorescent layer containing (i) a red fluorescent material having a composition of the formula: A a (M 1- s,Mn s)F b wherein A is at least one element selected from K and Cs, M is at least one element selected from Si and Ti, and a, b, and s are numerical values satisfying 1.7 ≤ a ≤ 2.1, 5.3 ≤ b ≤ 6.3, and 0 < s ≤ 0.05; and which RFM has - a peak wavelength (λp) of 625-635 nm, - an effective wavelength width of a spectrum for light emitted from the fluorescent material of 15-45 nm, and - an external quantum efficiency (η) of 40-75%; and (ii) a green-yellow fluorescent material (GYFM) having a composition of formula: (Ba x,Sr 1-z,Ca y,Eu z) e SiO f wherein e, f, x, y, and z are numerical values satisfying 1.9 ≤ e ≤ 2.1, 3.6 ≤ f ≤ 4.1, 0.15 ≤ x ≤ 0.4, 0 ≤ y ≤ 0.1 0 < z ≤ 0.15; and which GYFM has - a peak wavelength (λp) of 545-565 nm - a full width at half maximum of light emitted from the fluorescent material (FWHM) of 90-125 nm, and - an external quantum efficiency (η) of 70-90%, wherein the fluorescent layer is formed by dispersing the RFM and the GYFM in a resin. (i) a red fluorescent material having a composition of the formula: A a (M 1- s,Mn s)F b wherein A is at least one element selected from K and Cs, M is at least one element selected from Si and Ti, and a, b, and s are numerical values satisfying 1.7 ≤ a ≤ 2.1, 5.3 ≤ b ≤ 6.3, and 0 < s ≤ 0.05; and which RFM has - a peak wavelength (λp) of 625-635 nm, - an effective wavelength width of a spectrum for light emitted from the fluorescent material of 15-45 nm, and - an external quantum efficiency (η) of 40-75%; and - a peak wavelength (λp) of 625-635 nm, - an effective wavelength width of a spectrum for light emitted from the fluorescent material of 15-45 nm, and - an external quantum efficiency (η) of 40-75%; and (ii) a green-yellow fluorescent material (GYFM) having a composition of formula: (Ba x,Sr 1-z,Ca y,Eu z) e SiO f wherein e, f, x, y, and z are numerical values satisfying 1.9 ≤ e ≤ 2.1, 3.6 ≤ f ≤ 4.1, 0.15 ≤ x ≤ 0.4, 0 ≤ y ≤ 0.1 0 < z ≤ 0.15; and which GYFM has - a peak wavelength (λp) of 545-565 nm - a full width at half maximum of light emitted from the fluorescent material (FWHM) of 90-125 nm, and - an external quantum efficiency (η) of 70-90%, - a peak wavelength (λp) of 545-565 nm - a full width at half maximum of light emitted from the fluorescent material (FWHM) of 90-125 nm, and - an external quantum efficiency (η) of 70-90%,