| abstract |
A phosphor material useful for a solid state light emitting device and a light emitting device including the same are provided. A phosphor comprising a compound of formula (1), comprising: A a B b C c D d E e (1) A includes one or more elements selected from the group consisting of Ca, Sr, Ba, Mg, Y, Hf, lanthanide elements, and alkaline earth metals, B includes Eu and Ce, and C includes One or more tetrahedrally coordinated trivalent elements, D includes one or more tetrahedrally coordinated tetravalent elements, and E is N, O, F, C, S, Cl , A phosphor containing at least one element selected from the group consisting of Br, I, a + b = 1 and c + d = 2, and having a CaAlSiN 3 type crystal structure, and a light emission containing the phosphor Provide a device. A light emitting device including such a phosphor emits warm white light. [Selection figure] None |