| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain Mn-activated complex fluoride with excellent light-emitting properties without using hydrofluoric acid during conducting a main process.SOLUTION: This invention relates to a method for producing a red phosphor which is a Mn-activated complex fluoride represented by formula (1), AMF: Mn (1) (M is one or more tetravalent element selected from Si, Ti, Zr, Hf, Ge, and Sn, and A is one or more alkali metal selected from Li, Na, K, Rb, and Cs, and includes at least Na and/or K.), wherein, as a reactive source, a solid of a complex fluoride represented by formula (2), AMF(2) (M and A are as described above) and a solid of a manganese compound represented by formula (3), AMnF(3) (A is as described above) are mixed and heated at a temperature of from 100 to 500°C.</p> |
