Luminescent phosphors, based on rare earth substituted oxyfluorides in the A(1)3−x A(2)xMO4F family with A(1)/A(2)=Sr, Ca, Ba and M=Al, Ga

A new family of UV-activated phosphors made by substituting rare-earth activators such as trivalent Eu, Tb, Tm and Er into A(1)3−xA(2)xMO4F host lattices (A(1)/A(2)=Sr, Ca, Ba; M=Al, Ga) are introduced and their activation and emission spectra as well as their CIE values reported. The Tm-substituted system can be activated using light with a wavelength of 360 nm. Relative intensities of a family of Tb-substituted green phosphors activated at 254 nm and with emissions centered near 548 nm are discussed.