Thermally stable luminescence of KSrPO4:Eu2+ phosphor for white light UV light-emitting diodes.

A novel blue phosphor based on phosphate host matrix, KSrPO₄ doped with Eu²⁺, was prepared by solid state reaction. The phosphor invariably emits blue luminescence with a peak wavelength at 424 nm under ultraviolet excitation at 360 nm. Eu²⁺-doped KSrPO₄ phosphors show higher thermally stable luminescence which was found to be better than commercially available Y₃Al₅O₁₂:Ce³⁺ phosphor at temperature higher than 225 °C. [ABSTRACT FROM AUTHOR]