| abstract |
A red phosphor having good light emission characteristics and a light emitting device using the red phosphor are obtained. An excitation light source having a first emission spectrum that emits near ultraviolet to blue light, and at least a part of the first emission spectrum to absorb at least part of the first emission spectrum and emit at least a second emission spectrum. The phosphor is composed of Sr 4 Al 14 O 25 : Eu or BaSi 2 O 2 N 2 and nitride that emits red light by absorbing near ultraviolet light or blue light activated by europium. The general formula of the nitride phosphor is MAlSiN 3 : R (M is at least one selected from the group consisting of Mg, Ca, Sr, and Ba. R is a rare earth element). It is. [Selection] Figure 9 |