FLUOPHOR, LIGHT-EMITTING ELEMENT AND LIGHT-EMITTING DEVICE

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PROBLEM TO BE SOLVED : To provide a fluophor having improved moisture resistance by modifying a particle surface of an Mn4+ activated composite fluoride fluophor and a light-emitting element and a light-emitting device excellent in color rendering property and stability by using the fluophor. SOLUTION : There is provided a fluophor represented by the general formula : A2MF6 : Mn4+, where an element A is an alkali metal element containing at least K, an element M is one or more kinds of metallic elements selected from Si, Ge, Sn, Ti, Zr and Hf, F is fluorine, Mn is manganese and the fluophor contains Cl with concentration range of 20 ppm to 300 ppm. SELECTED DRAWING : Figure 1 COPYRIGHT : (C)2017, JPO&INPIT