Eu2+ luminescence in SrCaP2O7 pyrophosphate phosphor

A series of Eu2+ activated SrCaP2O7 pyrophosphate phosphors were synthesized by the modified solid-state reaction method. The X-ray diffraction (XRD) and photoluminescence (PL) properties of these phosphors were investigated at room temperature. The excitation spectra indicate that these phosphors can be effectively excited by Hg-free excitation. The emission spectra exhibit strong blue performance, which is due to the 4f(6)5d(1)4f(7) transition of Eu2+. The Fourier transform infrared spectrum at room temperature was investigated and surface morphology has been studied by scanning electron microscope. The prepared phosphor exhibited intense blue emission at the 427nm owing to Eu2+ ion by Hg-free excitation at 330nm, that is, solid-state lighting excitation. Hence, the availability of such a phosphor will significantly help in the growth of blue-emitting solid-state lighting applications. Copyright (c) 2012 John Wiley & Sons, Ltd.