XUE De-Sheng1, GONG Yu1, LIU Wen-Jing2, SI Ming-Su1, LIU Zai-Wen1
1Key Laboratory for Magnetism and Magnetic Materials (Ministry of Education), Lanzhou University, Lanzhou 7300002Department of Material Science, Lanzhou University, Lanzhou 730000
1Key Laboratory for Magnetism and Magnetic Materials (Ministry of Education), Lanzhou University, Lanzhou 7300002Department of Material Science, Lanzhou University, Lanzhou 730000
摘要Co3O4 nanowire arrays are fabricated by electrodeposition with following heat-treatment in atmosphere ambient. Photoluminescence is investigated at 295K. In the experiment, when increasing the excitation light wavelength from 260nm to 360nm, two kinds of emissions corresponding to the increasing excitation light wavelength are observed. One of them alters the excited emission position, another keeps its emission position. The distinct behaviour of excited emissions related to the increasing excitation wavelength indicates that the mechanism of them must be different. According to the experimental comparison and first-principle calculation, the two kinds of emissions are discussed.
Abstract：Co3O4 nanowire arrays are fabricated by electrodeposition with following heat-treatment in atmosphere ambient. Photoluminescence is investigated at 295K. In the experiment, when increasing the excitation light wavelength from 260nm to 360nm, two kinds of emissions corresponding to the increasing excitation light wavelength are observed. One of them alters the excited emission position, another keeps its emission position. The distinct behaviour of excited emissions related to the increasing excitation wavelength indicates that the mechanism of them must be different. According to the experimental comparison and first-principle calculation, the two kinds of emissions are discussed.
[1] Mariangela L and Leonardo F 1999 J. Electroanalyt. Chem. 464 149 [2] Gamil A E S et al 2000 Colloid. Surf. A: Physicochem. Engin.Aspect. 170 161 [3] Federico G, Marta M N, Antonella G 2004 Appl. Catalys. B:Environment. 48 267 [4] Salah A M 2002 J. Magn. Magn. Mater. 246 184 [5] Ichiyanagi Y, Kimishima Y and Yamada S 2004 J. Magn. Magn.Mater. 272276 e1245 [6] Yuko H et al 2001 Physica E 9 250 [7] W\"ollensteina J et al 2003 Sensors and Actuators B 93442 [8] Wang Y, Fu Z W and Qin Q Z 2003 Thin Solid Films 441 19 [9] Fu Z W, Wang Y and Zhang Y et al 2004 Solid State Ionics 170 105 [10] Yuan Z Y, Huang F and Feng C Q et al 2003 Mater. Chem.Phys. 79 1 [11] Lee G H, Huh S H and Jeong J W et al 2003 J. Appl. Phys. 94 4179 [12] Li S Y, Lee C Y and Tseng T Y 2003 J. Cryst. Growth 247 357 [13] Zhang L Y, Xue D S and Xu X F 2005 J. Magn. Magn. Mater. 294 10 [14]Xue D S and Gong Y 2006 Chin. Phys. Lett. 23 3105 [15] Will G et al 1987 J. Appl. Chem. 20 394
2007, Vol. 24 
