Temperature Dependence of the Fluorescence Emission Intensity of Eu/TiO2 Nanocrystals
ZENG Qing-Guang 1,2, DING Ze-Jun1, JU Xin3, WANG Yi2, SHENG Ye-Qing2
1Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei 2300262Department of Mathematics and Physics, Wu Yi University, Jiangmen 5290203Department of Physics, Nanjing University, Nanjing 210093
Temperature Dependence of the Fluorescence Emission Intensity of Eu/TiO2 Nanocrystals
ZENG Qing-Guang 1,2;DING Ze-Jun1;JU Xin3; WANG Yi2;SHENG Ye-Qing2
1Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei 2300262Department of Mathematics and Physics, Wu Yi University, Jiangmen 5290203Department of Physics, Nanjing University, Nanjing 210093
摘要The samples of europium ions doped titanium dioxide (Eu3+/TiO2) nanocrystals are synthesized by a modified sol-gel method with hydrothermal treatment. The x-ray diffraction and scanning electron microscopy are used to characterize the sample. The temperature-dependent fluorescence emission effect of Eu3+-doped samples is investigated. It is found that under the excitation of 514.5nm light, the emission intensity of Eu 3+ reaches a maximum value at 450K among various Eu 3+ dopant concentrations in Eu3+/TiO2 nanocrystals. The variation of the emission intensity may be attributed to the photon-assist absorption and the temperature-quenching effect.
Abstract：The samples of europium ions doped titanium dioxide (Eu3+/TiO2) nanocrystals are synthesized by a modified sol-gel method with hydrothermal treatment. The x-ray diffraction and scanning electron microscopy are used to characterize the sample. The temperature-dependent fluorescence emission effect of Eu3+-doped samples is investigated. It is found that under the excitation of 514.5nm light, the emission intensity of Eu 3+ reaches a maximum value at 450K among various Eu 3+ dopant concentrations in Eu3+/TiO2 nanocrystals. The variation of the emission intensity may be attributed to the photon-assist absorption and the temperature-quenching effect.
ZENG Qing-Guang;DING Ze-Jun;JU Xin; WANG Yi;SHENG Ye-Qing. Temperature Dependence of the Fluorescence Emission Intensity of Eu/TiO2 Nanocrystals[J]. 中国物理快报, 2007, 24(5): 1368-1371.
ZENG Qing-Guang, DING Ze-Jun, JU Xin, WANG Yi, SHENG Ye-Qing. Temperature Dependence of the Fluorescence Emission Intensity of Eu/TiO2 Nanocrystals. Chin. Phys. Lett., 2007, 24(5): 1368-1371.
[1] Nogami M and Abe Y 1996 J. Non-Cryst. Solids 197 73 [2] Fujita K, Tanaka K, Hirao K and Soga N 1998 Opt. Lett. 23 543 [3] Phan T L, Phan M H, Vu N, Anh T K and Yu S C 2004 Phys. StatusSolidi A 201 2170 [4] Ishizaka T and Kurokawa Y 2001 J. Appl. Phys. 90 243 [5] Liu F S, Liu Q L, Liang J K, Luo J, Su J, Zhang Y, Sun B J and RaoG H 2006 Chin. Phys. 15 2445 [6] Chen D D, Zhang Q Y, Liu Y H, Xu S H, Yang Z M, Deng Z D and JiangZ H 2006 Chin. Phys. 15 2902 [7] Ran G Z, Bian Z Q, Liu S F, Huang C H, and Qin G G 2004 Chin.Phys. Lett. 21 2533 [8] Karen L F, Michael H B, Alois P and Galen D S 2002 Angew.Chem. 114 1001 [9] Stouwdan J W and Veggel C J M 2004 Chem. Phys. Chem. 5743 [10] Merino R P, Gallardo A C, Rocha M G, Calderon I H, Castano V andRodriguez R. 2001 Thin Solid Films 401 118 [11] Zeng Q G, Ding Z J and Zhang Z M 2006 J. Lumin. 118301 [12] Wang J W, Song H W, Kong X, Xu W and Xia H P. 2002 J.Appl. Phys. 91 9466 [13] Xia H P, Song H W, Zeng X L, Wang J H, Zhang J L, Wang T, Xu J andZhang Y P 2004 Mater. Chem. Phys. 85 280 [14] Yu L, Song H W, Lu S, Liu Z, Yang L M, Wang T and Kong X 2004 Mater. Res. Bull. 39 2083 [15] Wang J W, Song H W, Kong X, Peng H S, Sun B, Chen B, Zhang J, Xu Wand Xia H P 2003 J. Appl. Phys. 93 1482 [16] Peng H, Song H W, Chen B, Wang J, Lu S, Kong X and Zhang H 2003 J. Chem. Phys. 118 3277 [17] Liu B, Shi C, Zhang Q and Chen Y 2002 J. Alloys Compounds 333 215
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