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Improved Upconversion Luminescence Properties of Gd2O3:Er3+/Gd2O3:Yb3+ Core-Shell Nanorods
Bai X.; Song H. W.; Pan G. H.; Ren X. G.; Dong B.; Dai Q. L.; Fan L. B.
2009
发表期刊Journal of Nanoscience and Nanotechnology
ISSN1533-4880
卷号9期号:4页码:2677-2681
摘要The Gd2O3:Er3+/Gd2O3:Yb3+ core-shell nanorods (NRs) as well as Er3+ and Yb3+ homogeneously codoped Gd2O3 NRs were synthesized by the hydrothermal method. The average diameters of the NRs are similar to 20 nm and the lengths are 150-200 nm. The thickness of the Gd2O3:Yb3+ shells on the Gd2O3:Er3+ cores are similar to 5 nm. The upconversion luminescence (UCL) properties of the core-shell NRs have been studied in contrast to homogeneously codoped NRs under 978-nm laser diode excitation. Green emissions of H-2(11/2), S-4(3/2) -I-4(15/2), and red emissions of F-4(9/2)-I-4(15/2) were observed. Relative intensity of the red (F-4(9/2)- I-4(15/2)) to the green (S-4(3/2)/H-2(11/2)-I-4(15/2)) and the intensity ratio (R-HS) of H-2(11/2)-I-4(15/2) to H-2(11/2) -I-4(15/2) decrease obviously in the core-shell NRs compared to the NRs. The power-dependence of UCL intensity and the thermal effect caused by 978-nm diode laser irradiation was studied. The result indicates that the cross-relaxation effect and the thermal effect in the core-shell structure is effectively depressed.
收录类别SCI ; EI
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/34426
专题中科院长春光机所知识产出
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Bai X.,Song H. W.,Pan G. H.,et al. Improved Upconversion Luminescence Properties of Gd2O3:Er3+/Gd2O3:Yb3+ Core-Shell Nanorods[J]. Journal of Nanoscience and Nanotechnology,2009,9(4):2677-2681.
APA Bai X..,Song H. W..,Pan G. H..,Ren X. G..,Dong B..,...&Fan L. B..(2009).Improved Upconversion Luminescence Properties of Gd2O3:Er3+/Gd2O3:Yb3+ Core-Shell Nanorods.Journal of Nanoscience and Nanotechnology,9(4),2677-2681.
MLA Bai X.,et al."Improved Upconversion Luminescence Properties of Gd2O3:Er3+/Gd2O3:Yb3+ Core-Shell Nanorods".Journal of Nanoscience and Nanotechnology 9.4(2009):2677-2681.
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