Sol–gel synthesis of single-phase Ca5MgSi3O12: Eu2+, Mn2+ phosphors for white-light emitting diodes

Abstract A novel Ca 5 MgSi 3 O 12 : Eu 2+ , Mn 2+ phosphor has been prepared by a sol–gel method. X-ray diffractometer, spectrofluorometer were used to characterize structural and optical properties of the samples. The results indicate that Ca 5 MgSi 3 O 12 : Eu 2+ , Mn 2+ phosphors show two emission bands excited by ultraviolet light. Blue (around 450 nm) and green (around 502 nm) emissions originate from Mn 2+ and Eu 2+ , respectively. With appropriate tuning the concentration ratios of Eu 2+ to Mn 2+ , Ca 5 MgSi 3 O 12 : Eu 2+ , Mn 2+ phosphors exhibit different hues and relative color temperatures, which have potential to act as a single-phase phosphor for white-light emitting diode.