| abstract |
【Task】 When used in combination with an ultraviolet to visible light emitting part, it is possible to arbitrarily set its own emission wavelength in a region where human visibility is high, so that the luminance in the region can be improved, and from the light emitting unit It is an object of the present invention to provide a phosphor having an excitation band over light in the wavelength range to be emitted, a method for manufacturing the same, and illumination and an LED using the phosphor. 【Solution】 As raw materials, for example, Ca 3 N 2 , CaO, Al 2 O 3 , AlN, Si 3 N 4 , SiO 2 , Eu 2 O 3 are prepared, and the molar ratio of each element is, for example, (Ca, Eu): Al: Each raw material is weighed so as to be Si = 1: 1: 1, mixed and charged in an elementary atmosphere, and fired at 1500 ° C. in a nitrogen atmosphere to obtain the main product phase of the phosphor represented by CaAlSiN 3 : Eu However, by controlling the blending amount of each raw material when charging the raw material, the oxygen concentration in the structure of the product phase and the molar concentration of Eu addition are controlled, and the emission wavelength of the product phase is arbitrarily set. [Selection figure] None |