Tunable emission of Li 4 SrCaSi 2 O 4− y N 2 y / 3 :Eu 2+ phosphors based on anion substitution induction for WLEDs and optical thermometry

Polychromatic emission can be achieved by controlling the distribution of the rare earth activator in multi-cation lattices, which can be used in the fields of white light LED and fluorescence temperature sensing.