期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 650, 期 -, 页码 374-380出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.07.162
关键词
Nanostructured materials; ZnO nanowire arrays; Liquid-solid reactions; Crystal structural; Optical properties; Field emission performance
资金
- National Natural Science Foundation of China [61405159]
- Natural Science Foundation research project key projects of Shaanxi Province [2014JZ2-003]
Uniform ZnO nanowire arrays were perpendicularly grown on the Zn substrate deposited with the ZnO seed layers by a low-temperature hydrothermal method for the field emission applications. The results indicate that uniform nanowires with the length of about 9 um and diameter of about 70 nm are single crystalline with hexagonal wurtzite structure growth along the c-axis and it enables ZnO nanowires to be a flexible bundling structure. A possible growth mechanism of the ZnO nanowire arrays has been proposed. Raman scatting spectra and photoluminescence spectra confirm that Al-ZnO nanowire arrays have higher structure quality than undoped ZnO nanowire arrays. In addition, the turn-on field and field emission factor were found to be approximately 1.60 V/um and 10835 for the 0.66% Al-ZnO nanowire arrays. It can considerably enhance the field emission performances of the sample after the Al doping, which indicates that Al-doped ZnO nanowire arrays are promising candidate for field emission application. (C) 2015 Elsevier B.V. All rights reserved.
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