Synthesis and spectral characteristics of La2MoO6:Ln3+ （Ln=Eu, Sm, Dy, Pr, Tb） polycrystals
来源期刊：JOURNAL OF RARE EARTHS2012年第9期
论文作者：孟凡桂 张新民 李焕 Hyo Jin Seo
文章页码：866 - 870
摘 要：The novel phosphors of La 2 MoO 6 activated with the trivalent rare earth Ln 3+ （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 photoluminescence （PL） excitation and emission spectra, and decay curves were employed to study their luminescence properties. The lifetimes of the characteristic emissions from Ln 3+ ions were in the order of millisecond except Pr 3+ ions. （LaEu 1-x ） 2 MoO 6 was a promising phosphor for practical application and the optimum concentration was x=0.075. The concentration quenching mechanism of Eu 3+ was also discussed by theoretical fitting using Burshtein model.
孟凡桂1，张新民1，李焕1，Hyo Jin Seo2
1. College of Materials Science and Engineering, Central South University of Forestry and Technology2. Department of Physics, Pukyong National University, Busan 608-737, Republic of Korea
摘 要：The novel phosphors of La 2 MoO 6 activated with the trivalent rare earth Ln 3+ （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 photoluminescence （PL） excitation and emission spectra, and decay curves were employed to study their luminescence properties. The lifetimes of the characteristic emissions from Ln 3+ ions were in the order of millisecond except Pr 3+ ions. （LaEu 1-x ） 2 MoO 6 was a promising phosphor for practical application and the optimum concentration was x=0.075. The concentration quenching mechanism of Eu 3+ was also discussed by theoretical fitting using Burshtein model.
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