Synthesis of horizontally aligned ZnO nanowires localized at terrace edges and application for high sensitivity gas sensor

J. Y. Son, S. J. Lim, J. H. Cho, W. K. Seong, Hyungjun Kim

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

We developed step edge decoration method for the fabrication of semiconductor ZnO nanodots and nanowires using pulsed laser deposition. We synthesized high quality ZnO nanowires with the small diameter of about 20 nm and the uniform interval of about 80 nm between each nanowire, which has a simple structure for the formation of contact electrodes. The ZnO nanowire-based sensor was prepared only with the simple process of a gold electrode formation. The ZnO nanowire-based sensor exhibited the high surface-to-volume ratio of 58.6 μ m-1 and the significantly high sensitivity of about 10 even for the low ethanol concentration of 0.2 ppm.

Original languageEnglish
Article number053109
JournalApplied Physics Letters
Volume93
Issue number5
DOIs
Publication statusPublished - 2008 Sep 22

Fingerprint

nanowires
sensitivity
sensors
synthesis
gases
electrodes
pulsed laser deposition
ethyl alcohol
gold
intervals
fabrication

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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Synthesis of horizontally aligned ZnO nanowires localized at terrace edges and application for high sensitivity gas sensor. / Son, J. Y.; Lim, S. J.; Cho, J. H.; Seong, W. K.; Kim, Hyungjun.

In: Applied Physics Letters, Vol. 93, No. 5, 053109, 22.09.2008.

Research output: Contribution to journalArticle

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AB - We developed step edge decoration method for the fabrication of semiconductor ZnO nanodots and nanowires using pulsed laser deposition. We synthesized high quality ZnO nanowires with the small diameter of about 20 nm and the uniform interval of about 80 nm between each nanowire, which has a simple structure for the formation of contact electrodes. The ZnO nanowire-based sensor was prepared only with the simple process of a gold electrode formation. The ZnO nanowire-based sensor exhibited the high surface-to-volume ratio of 58.6 μ m-1 and the significantly high sensitivity of about 10 even for the low ethanol concentration of 0.2 ppm.

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