A direct measurement of the local resistances in a ZnO tetrapod by means of impedance spectroscopy: The role of the junction in the overall resistance

Junghwan Huh, Gyu-Tae Kim, Jong Soo Lee, Sangtae Kim

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Abstract

We have measured the local resistances in the arms and at the junction in a ZnO tetrapod separately by means of ac impedance spectroscopy. The resistance at the junction is found to be even greater than that in the arms although a volume fraction of the junction is negligibly small compared to that of the arms. This result clearly demonstrates that the junction plays a decisive role in the overall electrical property of the ZnO-tetrapod and thus determines the functionality of the ZnO tetrapod electronic devices.

Original languageEnglish
Article number042111
JournalApplied Physics Letters
Volume93
Issue number4
DOIs
Publication statusPublished - 2008 Aug 15

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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