使用无催化剂热蒸发法,在ZnO/Si薄膜衬底上制备了ZnO纳米线/纳米棒混合阵列.其中,纳米线的直径为10～20nm,纳米棒的直径为60～160 nn,二者混合在一起垂直生长于衬底表面.从衬底的上游到下游位置,混合,阵列中纳米线的含量逐渐下降,纳米棒逐渐增多.室温光致发光测试发现尺寸较小的纳米线阵列的紫外光发光强度比大尺寸纳米棒阵列高约5倍.持续激发光照射下,纳米线阵列的发光强度逐渐上升,停止光照后又逐渐下降到初始值,这可以用纳米线表面O2分子的解吸附和吸附过程来理解.
参考文献
| [1] | Huang M H;Mao S;Feick H et al.Room-temperature Ultraviolet Nanowire Nanolasers[J].Science,2001,292(5523):1897-1899. |
| [2] | Nadarajah A;Word RC;Meiss J;Konenkamp R .Flexible inorganic nanowire light-emitting diode[J].Nano letters,2008(2):534-537. |
| [3] | Sun XW;Huang JZ;Wang JX;Xu Z .A ZnO nanorod inorganic/organic heterostructure light-emitting diode emitting at 342 nm[J].Nano letters,2008(4):1219-1223. |
| [4] | Parthangal PM;Cavicchi RE;Zachariah MR .A universal approach to electrically connecting nanowire arrays using nanoparticles - application to a novel gas sensor architecture[J].Nanotechnology,2006(15):3786-3790. |
| [5] | J X WANG;X W SUN;Y YANG .Hydrothermally grown oriented ZnO nanorod arrays for gas sensing applications[J].Nanotechnology,2006(19):4995-4998. |
| [6] | Law M;Greene LE;Johnson JC;Saykally R;Yang PD .Nanowire dye-sensitized solar cells[J].Nature materials,2005(6):455-459. |
| [7] | Wang LS;Zhang XZ;Zhao SQ;Zhou GY;Zhou YL;Qi JJ .Synthesis of well-aligned ZnO nanowires by simple physical vapor deposition on c-oriented ZnO thin films without catalysts or additives[J].Applied physics letters,2005(2):4108-1-4108-3-0. |
| [8] | Li, S;Zhang, XZ;Yan, B;Yu, T .Growth mechanism and diameter control of well-aligned small-diameter ZnO nanowire arrays synthesized by a catalyst-free thermal evaporation method[J].Nanotechnology,2009(49):495604:1-495604:9. |
| [9] | 唐斌,邓宏,税正伟,张强,刘忠华,谌贵辉.ZnO纳米针阵列合成及台阶动力学生长机理研究[J].人工晶体学报,2010(06):1485-1489. |
| [10] | W. I. Park;D. H. Kim;S.-W. Jung;Gyu-Chul Yi .Metalorganic vapor-phase epitaxial growth of vertically well-aligned ZnO nanorods[J].Applied physics letters,2002(22):4232-4234. |
| [11] | Lori E. Greene;Matt Law;Joshua Goldberger;Franklin Kim;Justin C. Johnson;Yanfeng Zhang;Richard J. Saykally;Peidong Yang .Low-Temperature Wafer-Scale Production of ZnO Nanowire Arrays[J].Angewandte Chemie,2003(26):3031-3034. |
| [12] | 黄林勇,刘宏,刘铎,张素芳,王继扬,胡陈果.以NH4Cl为矿化剂水热合成ZnO自组装微纳米结构[J].人工晶体学报,2010(03):578-582,597. |
| [13] | Shalish I;Temlin H;Narayanamurti V .Size-Dependent Surface Luminescence in ZnO Nanowires[J].Physical Review B,2004,69:245401. |
| [14] | L. Liao;H. B. Lu;J. C. Li;H. He;D. F. Wang;D. J. Fu;C. Liu;W. F. Zhang .Size Dependence of Gas Sensitivity of ZnO Nanorods[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2007(5):1900-1903. |
| [15] | Chen C W;Chen K H;Shen C H et al.Anomalous Blueshift in Emission Spectra of ZnO Nanorods with Sizes beyond Quantum Confmement Regime[J].Applied Physics Letters,2006,88:241905. |
| [16] | Lin KF;Cheng HM;Hsu HC;Lin LJ;Hsieh WF .Band gap variation of size-controlled ZnO quantum dots synthesized by sol-gel method[J].Chemical Physics Letters,2005(4-6):208-211. |
| [17] | Wang R P;Xu G;Jin P .Size Dependence of Electron-Phonon Coupling in ZnO Nanowires[J].Physical Review B,2004,69:113303. |
| [18] | Su Li;Xiaozhong Zhang;Lihuan Zhang .Sb2O3-Induced Tapered ZnO Nanowire Arrays: The Kinetics of Radial Growth and Morphology Control[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2010(23):10379-10385. |
| [19] | Sun Y;Ndifor-Angwafor NG;Riley DJ;Ashfold MNR .Synthesis and photoluminescence of ultra-thin ZnO nanowire/nanotube arrays formed by hydrothermal growth[J].Chemical Physics Letters,2006(4-6):352-357. |
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