| 摘要 |
<p>Disclosed is a red phosphor which is obtained by activating a titanate represented by the following general formula: M2TiO4 (wherein M represents one or more alkaline earth metal elements) with Mn, and has an Si content of not more than 24,000 ppm. The red phosphor can be produced by a process including a step of mixing an alkaline earth metal source, a manganese source and a titanium source, a step of firing the resultant mixture to obtain a fired body, and a step of annealing the thus-obtained fired body. As the above-mentioned metal sources, those metal sources each having such an Si purity that the Si content in the resulting red phosphor is not more than 24,000 ppm are used.</p> |
