Cathodoluminescent and electrical properties of an individual ZnO nanowire with oxygen vacancies |
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Authors: | He Xiao-Bo Yang Tian-Zhong Cai Jin-Ming Zhang Chen-Dong Guo Hai-Ming Shi Dong-Xi Shen Cheng-Min and Gao Hong-Jun |
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Institution: | Beijing National Laboratory of Condensed Matter Physics,
Institute of Physics,
Chinese Academy of Sciences, Beijing
100190,
China |
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Abstract: | A single ZnO nanowire with intrinsic oxygen vacancies is utilized to
fabricate four-contact device with focus ion beam lithography
technique. Cathodoluminescent spectra indicate strong near-UV and
green emission at both room temperature and low temperatures.
Experimental measurement shows the temperature-dependent
conductivity of the ZnO nanowire at low temperatures (below 100\,K).
The further theoretical analysis confirms that weak localization
plays an important role in the electrical transport, which is
attributed to the surface states induced by plenty of oxygen
vacancies in ZnO nanowire. |
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Keywords: | ZnO nanowire electrical
transport oxygen vacancies weak localization |
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