A novel orange emitting bismuth molybdate based phosphor

Abstract A novel orange emitting bismuth molybdate based phosphor (Bi 2 MoO 6 :Sm 3+ ) prepared via a conventional high-temperature solid-state reaction was reported for the first time in the present work. X-ray diffraction (XRD), Fourier transform infrared (FT-IR), and fluorescence spectroscopy (FS) measurements were utilized to investigate their phase purity, structure, and photoluminescence properties. The f–f transitions of Sm 3+ ions were designated in terms of the excitation and emission spectrum. The critical distance as well as concentration quenching mechanism of Sm 3+ ions in Bi 2 MoO 6 host was also calculated and confirmed, respectively. The decay behaviors of Bi 2 MoO 6 :Sm 3+ phosphors were investigated in detail. The as-prepared phosphors can be effectively excited with a 407 nm light, and exhibit orange emission with decay constant of milliseconds. The above work indicates that the Bi 2 MoO 6 :Sm 3+ phosphors could have potential application in white light-emitting diodes.