SYNTHESIS AND LUMINESCENCE OF DIOXO Wo~6+ (d~O) COMPLEX: BaWO_2F_4.

摘要

The synthesis and luminescence properties of BaWO_2F_4 are reported and discussed. The oxofluorotungstate displays efficient luminescence at room temperature under short wavelength ultraviolet excitation. The optical prop- erties are rationalized in terms of the localization of luminescence within the "WO_2" groups of the [WO_2F_4]~2- octahedral complex in BaWO_2F4.