Controllable growth of ZnO nanowires with different aspect ratios and microstructures and their photoluminescence and photosensitive properties |
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| Authors: | Li Li Heqing Yang Jie Yu Yan Chen Junhu Ma Jianying Zhang Yuzhe Song Fei Gao |
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| Institution: | aKey Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an 710062, China;bSchool of Physics & Information Technology, Shaanxi Normal University, Xi’an 710062, China |
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| Abstract: | ZnO nanowires with variable aspect ratios and microstructures have been prepared by a hydrothermal reaction of Zn foil and Na2C2O4 solution at 140 °C. The ZnO nanowires are single crystalline with the wurtzite structure and grow in the 0 0 0 1] direction, and their aspect ratios and microstructures can be changed by tuning the reaction time and the Na2C2O4 concentration. UV and blue-green emissions that depended on the Na2C2O4 concentration are observed from the ZnO nanowires with different aspect ratios. The photosensitivity of ZnO ultralong nanowires with honeycomb-like micropatterns is found to be about 10 at 5 V. |
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| Keywords: | A1 Characterization A1 Nanostructures A2 Hydrothermal crystal growth B1 Nanowires B2 Semiconducting II– VI materials |
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