Luminescence and optical absorption of fluorozirconate glass doped with K2MnF6

Fluorozirconate glass doped with K2MnF6 was produced to obtain a red-emitting phosphor, and K2MnF6 was synthesized according to a specially developed procedure using xenon difluoride. The luminescence spectrum exhibited a band at 550 nm attributed to Mn2+, and the absorption spectra belonged to Mn2+ and Mn3+ ions, which were formed due to the reduction of Mn4+ ions.