Synthesis and luminescent properties of Ba2V2O7:Sm3+

CIE chromaticity diagram for sample Ba2V2O7:xSm3+ (x=0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07 and 0.08, respectively) excited at 341 nm (a) and 365 nm (b) (The inset is the photograph of the Ba1.95V2O7:0.05Sm3+ powder excited at 365 nm)