INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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ZnO nanorod arrays with tunable size and field emission properties on an ITO substrate achieved by an electrodeposition method |
Gong Jiang-Feng(巩江峰)a)b)†, Dou Zhao-Ming(窦召明)a), Wang Zhi-Qiang(王志强) b), Zhang Bo(张博)a)b), Zhu Wei-Hua(朱卫华)a), Zhang Kai-Xiao(张开骁) a), Liu Ming-Yi(刘明熠)a), Zhu Hao(朱浩)c), and Zhou Jian-Feng(周剑锋)c) |
a. Department of Physics, Hohai University, Nanjing 210098, China; b. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China; c. College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China |
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Abstract In the present work, vertically aligned ZnO nanorod arrays with tunable size are successfully synthesized on nonseeded ITO glass substrates by a simple electrodeposition method. The effect of growth conditions on the phase, morphology, and orientation of the products are studied in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). It is observed that the as-prepared nanostructures exhibit a preferred orientation along c axis, and the size and density of the ZnO nanorod can be controlled by changing the concentration of ZnCl2. Field emission properties of the as-synthesized samples with different diameters are also studied, and the results show that the nanorod arrays with a smaller diameter and appropriate rod density exhibit better emission properties. The ZnO nanorod arrays show a potential application in field emitters.
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Received: 20 November 2011
Revised: 05 December 2011
Accepted manuscript online:
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PACS:
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81.07.Bc
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(Nanocrystalline materials)
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81.15.Pq
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(Electrodeposition, electroplating)
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79.70.+q
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(Field emission, ionization, evaporation, and desorption)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11004047), the China Postdoctoral Sustentation Fund (Grant No. 200904501062), Jiangsu Provincial Postdoctoral Sustentation Fund, China (Grant No. 0901001B), and the Fundamental Research Fund for Central Universities (Grant Nos. 2010B09514 and 2010B29014). |
Corresponding Authors:
Gong Jiang-Feng
E-mail: jfgong@hhu.edu.cn
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Cite this article:
Gong Jiang-Feng(巩江峰), Dou Zhao-Ming(窦召明), Wang Zhi-Qiang(王志强), Zhang Bo(张博), Zhu Wei-Hua(朱卫华), Zhang Kai-Xiao(张开骁), Liu Ming-Yi(刘明熠), Zhu Hao(朱浩), and Zhou Jian-Feng(周剑锋) ZnO nanorod arrays with tunable size and field emission properties on an ITO substrate achieved by an electrodeposition method 2012 Chin. Phys. B 21 068101
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