Enhancement of red emission by co-dopant Ln^(3+) ions in Eu^(3+) :LaOF nanoparticles 被引量：4

Enhancement of red emission by co-dopant Ln^(3+) ions in Eu^(3+) :LaOF nanoparticles

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摘要 Fluoride nanoparticles of Ln3＋（Ln3＋=Pr3＋, Nd3＋, Sm3＋, Cod3＋,Tb3＋ Dy3＋, I-I03＋, Er3＋, Tm3＋, yb3＋）/Eu3＋：LaOF and Eu3＋：LaOF with rhombohedral crystal structure were prepared by a hydrothermal-sintering method. The red fluorescence emission of Eu3＋ ions was found to be enhanced with most of the co-dopant Ln3. ions. Compared with strong fluorescence emission at 610 nm of Eu3＋：LaOF nanoparticles, the enhancement factors was up to ten times in Ln3~ （Ln3＋=Gd3＋, Dy3＋, Tm3＋）FEu3＋：LaOF co-doped nanoparticles. The results show that the asymmetry of the local environment of Eu3＋ ion was reduced by co-doping Ln3＋ ion into the nanoparticles, and that energy transfer might occur between Eu3_ and codopant Ln3＋ ions, which is suggested as the source of the observed fluorescence enhancement. Fluoride nanoparticles of Ln3+(Ln3+=Pr3+,Nd3+,Sm3+,Gd3+,Tb3+Dy3+,Ho3+,Er3+,Tm3+,Yb3+)/Eu3+:LaOF and Eu3+ :LaOF with rhombohedral crystal structure were prepared by a hydrothermal-sintering method. The red fluorescence emission of Eu3+ ions was found to be enhanced with most of the co-dopant Ln3+ ions. Compared with strong fluorescence emission at 610 nm of Eu3+ :LaOF nanoparticles, the enhancement factors was up to ten times in Ln3+(Ln3+ =Gd3+,Dy3+,Tm3+)/Eu3+ :LaOF co-doped nanoparticles. The results show that the asymmetry of the local environment of Eu3+ ion was reduced by co-doping Ln3+ ion into the nanoparticles, and that energy transfer might occur between Eu3+ and codopant Ln3+ ions, which is suggested as the source of the observed fluorescence enhancement.

作者 FU ZhenXing ZHENG HaiRong HE EnJie GAO Wei LI GuiAn

机构地区 College of Physics and Information Technology College of Physics and Information Technology

出处《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2013年第5期928-932,共5页 中国科学：物理学、力学、天文学（英文版）

基金 supported by the National Natural Science Foundation of China (Grant No. 11174190) the Fundamental Research Funds for the Central Universities (Grant No. GK201101006) Shaanxi Normal University, the Natural Science Foundation (Grant No. NZ11252) the Key Technologies R&D Program (Grant No.08222-19) of Ningxia Province,China

关键词 fluorescence enhancement Ln3＋/Eu3＋：LaOF nanoparticles asymmetry ratio 稀土离子纳米粒子共掺杂铕离子红光发射粒子增强荧光增强作用荧光发射

分类号 TN104.3 [电子电信—物理电子学]

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