Optical performance of Ca2P2O7:Ce3+ pyrophosphate phosphor synthesized via modified solid state diffusion

In the present study Ca2P2O7:Ce3+ pyrophosphate phosphor was synthesized by modified solid state diffusion. Materialization of crystalline phases were recognized by X ray diffraction pattern and their photoluminescence properties were studied using excitation and emission spectra under ultraviolet ray excitation ranging from 250 to 400 nm. The Ca2P2O7:Ce3+ phosphor was excited at 298 nm, the emission spectrum exhibited two intense bands at 362 nm and 390 nm emission due to 5d -> 4f transitions of Ce3+ ions. The morphological investigations of Ca2P2O7 pyrophosphate have been carried out by scanning electron microscopy and fourier transform infrared spectra at room temperature was also examined. Stoke's shift, type of interaction between activator and the influences of the doping concentration of Ce3+ on the luminescence characteristics are discussed from photoluminescence excitation and emission spectra. (C) 2018 Elsevier B.V. All rights reserved.