Hydrothermal Synthesis and Field Enhancement Behavior of ZnO Nanorods Pattern
Hydrothermal Synthesis and Field Enhancement Behavior of ZnO Nanorods Pattern
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DOI：
10.1088/1674-0068/24/06/753-758
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发表时间：
2011-12
影响因子：
1
通讯作者：
Jing Tang;Lin Du;Wen-hui Pang;Jingying Zheng;Xiao-chun Tian;Jin‐Liang Zhuang
中科院分区：
文献类型：
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作者：
Jing Tang;Lin Du;Wen-hui Pang;Jingying Zheng;Xiao-chun Tian;Jin‐Liang Zhuang
提出了一种从六次甲基四胺（HMT）和Zn（NO3）2组成的溶液中制备ZnO纳米棒图案的新方法。衬底是ITO衬底，其上覆盖有有序的Au岛。由于Au和下面的ITO衬底在异质成核过程的初始阶段具有两种不同的成核速率，因此随后在快速成核区域上的ZnO生长在扩散控制下发生，并且能够将ZnO纳米棒的合成限制在特定位置。通过调整硝酸锌和HMT的浓度，显示了ZnO纳米棒图案化的新途径的可能性。利用X射线衍射和光致发光对纳米棒图案进行了表征，并研究了ZnO纳米棒图案的场发射性能。具有良好取向的ZnO纳米棒图案也显示出良好的场增强行为，具有高的场增强因子值。
We provide a new way to prepare ZnO nanorods pattern from the solution composed of hexamethylenetetramine (HMT) and Zn(NO3)2. The substrate is ITO substrate covered by well ordered Au islands. Since Au and the underneath ITO substrate have two different nucleation rates in the initial stage of heterogeneous nucleation process, the subsequent ZnO growth on the quick nucleating area takes place under diffusion control and is able to confine the synthesis of ZnO nanorods to specific locations. The concentrations of zinc nitrate and HMT are well adjusted to show the possibility of the new route for the patterning of the ZnO nanorods. Furthermore, the nanorods pattern was characterized by X-ray diffraction and photoluminescence and the performance of field emission property from ZnO nanorod patterns was investigated. The ZnO nanorods pattern with a good alignment also shows a good field enhancement behavior with a high value of the field enhancement factor.