Abstract
Abstract A series of single-phased emission-tunable Ca3Si2O7:Ce3+, Eu2+ phosphors has been prepared by the solid-state reaction method. The phosphors show two intense emission bands at about 450 nm and 610 nm, which are attributed to the 5d→4f transitions of Ce3+ and Eu2+ ions, respectively. The emission colors of Ca3Si2O7:Ce3+, Eu2+ phosphors vary from blue (0.148, 0.147) to white (0.309, 0.260), and eventually to orange (0.407, 0.319) by tuning the Eu2+/Ce3+ ratio. Energy transfer from Ce3+ to Eu2+ is studied by luminescence spectra and energy transfer efficiency. The results show an electric quadrupole–quadrupole interaction plays an important role in the process of energy transfer. The phosphors with tunable emission are suitable for application in white light-emitting diodes.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
