標題: Electrical conduction mechanisms in natively doped ZnO nanowires (II)
作者: Tsai, Lin-Tzung
Chiu, Shao-Pin
Lu, Jia Grace
Lin, Juhn-Jong
電子物理學系
物理研究所
Department of Electrophysics
Institute of Physics
公開日期: 9-Apr-2010
摘要: We have measured the intrinsic electrical resistivities, rho(T), of three individual single-crystalline ZnO nanowires (NWs) from 320 down to 1.3 K. The NWs were synthesized via carbon thermal chemical vapor deposition and the four-probe Pt contacting electrodes were made by the focused-ion-beam technique. Analysis of the overall temperature behavior of rho(T) confirms that the charge transport processes in natively doped ZnO NWs are due to a combination of the thermal activation conduction and the nearest-neighbor hopping conduction processes, as proposed and explained in a recent work (Chiu et al 2009 Nanotechnology 20 015203) where the ZnO NWs were grown by a different thermal evaporation method and the four-probe electrodes were made by the electron-beam lithography technique. Taken together, the observations of these two complementary studies firmly establish that the electrical conduction mechanisms in natively doped ZnO NWs are unique and now satisfactorily understood.
URI: http://dx.doi.org/10.1088/0957-4484/21/14/145202
http://hdl.handle.net/11536/5519
ISSN: 0957-4484
DOI: 10.1088/0957-4484/21/14/145202
期刊: NANOTECHNOLOGY
Volume: 21
Issue: 14
結束頁: 
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