HEXAFLUOROMANGANATE (IV), COMPLEX FLUORIDE PHOSPHOR, AND METHODS RESPECTIVELY FOR PRODUCING SAID PRODUCTS

摘要

The present invention relates to a method for producing a hexafluoromanganate (IV), said method being characterized by comprising: inserting an anode and a cathode into a reaction solution that contains a compound containing manganese having an atomic valence of less than 4 and/or manganese having an atomic valence of more than 4 and hydrogen fluoride; and then applying an electric current having an electric current density of 100 to 1000 A/m2 between the anode and the cathode. According to the present invention, it becomes possible to produce a hexafluoromanganate (IV) in which the content ratio of manganese having an atomic valence of 4 is high and the contamination with oxygen is reduced and which has high purity. When a complex fluoride red phosphor is produced using the hexafluoromanganate (IV) as a raw material, the phosphor produced has high luminescence properties, particularly high internal quantum efficiency.