| abstract |
To provide a light-emitting material made of an inorganic compound, which exhibits higher luminance than the conventional material, due to its crystal structure. The light-emitting material includes a host material and an impurity element which serves as a luminescence center. The main crystal structure of the light-emitting material is hexagonal. The host material is a compound of a Group 2 element and a Group 16 element, or a compound of a Group 12 element and a Group 16 element. The impurity element includes at least one of manganese (Mn), samarium (Sm), terbium (Tb), erbium (Er), thulium (Tm), europium (Eu), cerium (Ce), and praseodymium (Pr). |