The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Field Emission Property of ZnO Nanowire with Nanocone Shape

나노뿔 형태로 제작된 ZnO 나노선의 전계방출 특성

  • Received : 2012.02.07
  • Accepted : 2012.03.12
  • Published : 2012.04.01
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Abstract

ZnO nanowires were fabricated by hydrothermal synthesis technique for field emission device application. Al-doped zinc oxide (AZO) thin films were prepared as seed layer of catalyst for the ZnO nanowire synthesis, for which conductivity of the seed layer was tried to be improved for enhancing the field emission property of the ZnO nanowire. The AZO seed layer revealed specific resistivity of $ 7.466{\times}10^{-4}[{\Omega}{\cdot}cm]$ and carrier mobility of 18.6[$cm^2$/Vs]. Additionally, upper tip of the prepared ZnO nanowires was treated by hydrochloric acid (HCl) to form a nanocone shape of ZnO nanowire, which was aimed for enhanced focusing of electric field on that and resultingly to improve field emission property of the ZnO nanowires. The ZnO nanowire with nanocone shape revealed decreased threshold electric field and increased current density than those of the simple ZnO nanowires.

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References

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