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Citation: Guo Min, Diao Peng, Ren Yan-Jie, Wang Bin, Cai Sheng-Min. Preparation and Characterization of Highly Oriented ZnO Single Crystal Submicrorod Arrays[J]. Acta Physico-Chimica Sinica, ;2003, 19(05): 478-480. doi: 10.3866/PKU.WHXB20030521 shu

Preparation and Characterization of Highly Oriented ZnO Single Crystal Submicrorod Arrays

1.
College of Chemistry and Molecular Engineering, Peking University, Beijing　100871;School of Material Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 　100083

Received Date: 16 October 2002
Available Online: 15 May 2003

Highly oriented ZnO submicrorod arrays have been prepared on SnO2 conducting glass substrates which were modified with densely packed ZnO crystal nucleus. The growth procedure of ZnO submicrorod arrays consists of two steps:(1) modification of SnO2 conducting glass substrates with dispersed ZnO crystal nucleus by immersing the substrates into concentrated solution, and (2) hydrothermal growth of ZnO submicrorods in aqueous solution. Scanning electron microscope (SEM), selected area electron diffraction (SAED) and X-ray diffraction(XRD) have been employed to investigate the ZnO submicrorod arrays.SEM images indicate that ZnO hexa nal submicrorod arrays grow nearly perpendicularly to the substrates. The diameter and the length of ZnO submicrorod are about 400～500 nm and 2 μm for 2 h growth time, respectively. Result of SAED reveals that the ZnO submicrorod arrays are single-crystalline hexa nal rods. XRD shows that the ZnO submicrorods are wurtzite. The significantly higher intensity obtained from the (002) diffraction peak indicates that the submicrorods are preferentially oriented in the c-axis direction (grown along the[001] crystallographic face direction).
- ZnO;Submicrorod;Oriented growth;Hydrothermal;SEM;SAED;XRD
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