中国物理B ›› 2008, Vol. 17 ›› Issue (9): 3444-3447.doi: 10.1088/1674-1056/17/9/050

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Cathodoluminescent and electrical properties of an individual ZnO nanowire with oxygen vacancies

贺晓波, 杨天中, 蔡金明, 张晨栋, 郭海明, 时东霞, 申承民, 高鸿钧   

  1. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2008-06-03 修回日期:2008-06-30 出版日期:2008-09-08 发布日期:2008-09-08
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 60771037 and 90406022), the National High Technology Research and Development Program of China (Grant No 2008AA03Z309) and the National Key Basic Research Program of China (G

Cathodoluminescent and electrical properties of an individual ZnO nanowire with oxygen vacancies

He Xiao-Bo(贺晓波), Yang Tian-Zhong(杨天中), Cai Jin-Ming(蔡金明), Zhang Chen-Dong(张晨栋), Guo Hai-Ming(郭海明), Shi Dong-Xia(时东霞), Shen Cheng-Min(申承民), and Gao Hong-Jun(高鸿钧)†   

  1. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2008-06-03 Revised:2008-06-30 Online:2008-09-08 Published:2008-09-08
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 60771037 and 90406022), the National High Technology Research and Development Program of China (Grant No 2008AA03Z309) and the National Key Basic Research Program of China (G

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摘要： 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.

关键词: ZnO nanowire, electrical transport, oxygen vacancies, weak localization

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.

Key words: ZnO nanowire, electrical transport, oxygen vacancies, weak localization

中图分类号:  (Cathodoluminescence, ionoluminescence)

  • 78.60.Hk
73.63.Nm (Quantum wires) 78.67.Lt (Quantum wires)