Synthesis and characterization of Ba3MgTa2O9:xSm3+ orange-red phosphor with excellent color purity and superior color stability

In this study, a Ba 3 MgTa 2 O 9 : x Sm 3+ orange-red phosphor was synthesized by a high-temperature solid-phase reaction method, and its fluorescence properties were analyzed. The Ba 3 MgTa 2 O 9 : x Sm 3+ phosphor exhibited three emission peaks at 561 nm ( 4 G 5/2  →  6 H 5/2 ), 595 nm ( 4 G 5/2  →  6 H 7/2 ), and 642 nm ( 4 G 5/2  →  6 H 9/2 ) under the excitation of 407 nm. The Ba 3 MgTa 2 O 9 :0.05Sm 3+ phosphor had good thermal stability and excellent color stability at different temperatures. Ba 3 MgTa 2 O 9 :0.05Sm 3+ phosphor is the best doping concentration phosphor, with a high color purity of 98.52 %. The XRD of the Sm 3+ ion-doped phosphor showed that its crystal structure and morphology were stable, and the doping of Sm 3+ ions did not affect its crystal structure significantly. Therefore, the Sm 3+ ion-doped phosphors in this study have potential applications and are expected to be used in the field of WLED.