| 简介 |
The present invention pertains to the following : a phosphor in which humidity resistance is improved by modifying the particle surface of an Mn4+ activated complex fluoride phosphor which can achieve high luminance red-color light emission; and a light emitting element and a light emitting device which excel in color rendering properties and in stability as a result of using such phosphor. This phosphor is represented by general formula A2MF6 : Mn4+. Element A is an alkali metal element containing at least K. Element M is at least one type of metal element selected from among Si, Ge, Sn, Ti, Zr, and Hf. F is fluorine and Mn is manganese. The phosphor is characterized in that the particle surface thereof is modified so that the content of fluorine in a supernatant liquid is no more than 2 wt%, the supernatant liquid being obtained after dispersing fluorine in a methanol water mixture (with a water content of 10 mass%) of 100 parts by mass ratio and leaving the same to stand for 10 minutes. |
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