摘要
The novel phosphors of La2MoO6 activated with the trivalent rare earth Ln3＋ （Ln=Eu, Sm, Dy, Pr, Tb） ions were synthesized by solid state reactions at high temperature in air atmosphere, and their phase impurities and luminescent properties were studied. The photolu- minescence （PL） excitation and emission spectra, and decay curves were employed to study their luminescence properties. The lifetimes of the characteristic emissions from Ln3＋ ions were in the order of millisecond except Pr3＋ ions. （LaEu1-x）2MoO6 was a promising phosphor for practical application and the optimum concentration was x=0.075. The concentration quenching mechanism of Eu3＋ was also discussed by theoretical fitting using Burshtein model.
The novel phosphors of La2MoO6 activated with the trivalent rare earth Ln3＋ （Ln=Eu, Sm, Dy, Pr, Tb） ions were synthesized by solid state reactions at high temperature in air atmosphere, and their phase impurities and luminescent properties were studied. The photolu- minescence （PL） excitation and emission spectra, and decay curves were employed to study their luminescence properties. The lifetimes of the characteristic emissions from Ln3＋ ions were in the order of millisecond except Pr3＋ ions. （LaEu1-x）2MoO6 was a promising phosphor for practical application and the optimum concentration was x=0.075. The concentration quenching mechanism of Eu3＋ was also discussed by theoretical fitting using Burshtein model.
基金
Project Sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (2011-508)
Technology Program of Hunan Provincial Department of Housing and Urban-Rural Development (201020)
Science and Technology Program of Hunan Province (2011GK3223)
the Industrial Strategic Technology Development Program (10037416) funded by the Ministry of Knowledge Economy (MKE, Korea)
