Single-Phase White Light-Emitting Ca(x)Ba((9–x))Lu(2)Si(6)O(24):Eu(2+)/Mn(2+) Phosphors

[Image: see text] Single-phase white light-emitting Ca(x)Ba((9–x))Lu(2)Si(6)O(24):Eu(2+)/Mn(2+) codoped phosphors were successfully synthesized, and their photoluminescence properties were experimentally determined. The analysis of the experimental results suggests that the partial substitution of Ba(2+) ions by smaller Ca(2+) ions alters the distribution of the Eu(2+) luminescence center among the three available Ba(2+) sites in the host lattice, which enables the emission to be efficiently tuned from blue to blue-green-yellow region. The incorporation of Mn(2+) ions resulted in a red light emission at around 618 nm, through energy transfer from Eu(2+) to Mn(2+) ions via dipole–dipole interactions. The incorporation of Ca(2+) and Mn(2+) ions also resulted in improved thermal stability. The results qualify the produced Ca(x)Ba((9–x))Lu(2)Si(6)O(24):Eu(2+)/Mn(2+) composition as a potential ultraviolet-convertible white light-emitting phosphor.