Zinc oxide nanowire based field emitters

Sivakumar Ramanathan, Yu Chun Chen, Yonhua Tzeng

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)


We report the field emission properties of 50 nm diameter ZnO nanowires that were electrochemically self-assembled within pores of an anodic alumina film. Current versus voltage measurements of the FowlerNordheim tunneling current indicate that the turn-on field is 15 V μm-1 and the field enhancement factor β calculated for two sets of samples turned out to be 670 and 1481, respectively (theoretical value for β in bulk ZnO is 205). The enhancement in β is most likely due to the large aspect ratio of the nanowires. Variation in the length of the nanowires causes the screening effect, which increases the turn-on field and reduces the emission current density. The currentvoltage characteristics of the wires are non-linear and show a rectifying behavior.

頁(從 - 到)285-288
期刊Physica E: Low-Dimensional Systems and Nanostructures
出版狀態Published - 2010 11月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 原子與分子物理與光學
  • 凝聚態物理學


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