FLUORIDE PHOSPHOR AND PRODUCTION METHOD THEREOF, AND SEMICONDUCTOR LIGHT-EMITTING DEVICE

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PROBLEM TO BE SOLVED : To provide a red light emitting fluoride phosphor with excellent water resistance. SOLUTION : A fluoride phosphor contain at least a rare-earth element fluoride on a surface of a fluoride particle represented by general formula A2MF6 : Mn. In the formula, M is at least one metal element selected from among silicon (Si), titanium (Ti) and germanium (Ge), A is at least one alkali metal element selected from sodium (Na) and potassium (K). The phosphor has improved water resistance and excellent long-term stability. Also provided is a semiconductor light-emitting device based on the same. SELECTED DRAWING : Figure 1 COPYRIGHT : (C)2017, JPO&INPIT