| 摘要 |
PROBLEM TO BE SOLVED: To provide a white light-emitting device in which variation of chromaticity of emitted light is suppressed by a combination of phosphor.SOLUTION: The white light-emitting device includes a light-emitting element which emits blue light having a wavelength in a range of 420-490 nm, and a phosphor layer including a first phosphor activated with Ce, having a maximal value of absorption spectral characteristics in a wavelength range of 420-490 nm and excited with light emitted from the light-emitting element to radiate fluorescent light of first wavelength, and a second phosphor activated with Eu, and excited with light emitted from the light-emitting element to radiate fluorescent light of second wavelength. |
