LAUSR

Abstract Ca2NaMg2V3O12 (CNMV):Ln3+ (Dy3+, Sm3+) phosphors were successfully prepared by high temperature solid-state method. The effect of different Ln3+ concentrations on the luminescent properties of phosphor was investigated. General structure analysis system (GSAS) shown Ln3+ ions occupied Ca2+/Na+ sites. CNMV:Ln3+ (Dy3+, Sm3+) had broad excitation bands at 200–450 nm and broad emission bands at 400–700 nm. Under 365 nm excitation, CNMV:Dy3+ samples show two dominant emission peaks at around 480 nm and 575 nm, which is corresponding to 4F9/2-6H15/2 and 4F9/2-6H13/2 transitions of Dy3+, CNMV: Sm3+ samples show three emission peaks, which is corresponding to the 4G5/2-6HJ/2 (J = 5,7,9) transitions of Sm3+. The energy transfer (ET) mechanism could be judged as an electric multipole interaction with their quenching concentration and critical distance. ET efficiency (ETE), lifetime, quantum efficiency (QE), color coordinates and good thermal stability were reported. Emitting-color tended to near white light when adjusting Ln3+ concentration.