Application of ZnO Single-Crystal Wire Grown by the Thermal Evaporation Method as a Chemical Gas Sensor for Hydrogen Sulfide

Title
Application of ZnO Single-Crystal Wire Grown by the Thermal Evaporation Method as a Chemical Gas Sensor for Hydrogen Sulfide
Author(s)
이태진박노국이선이
Keywords
EPITAXIAL-GROWTH; NANOWIRES; DESULFURIZATION; FABRICATION; NANOCABLES; REDUCTION; NANOTUBES
Issue Date
201101
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.11, no.1, pp.614 - 618
Abstract
A zinc oxide single-crystal wire was synthesized for application as a gas-sensing material for hydrogen sulfide, and its gas-sensing properties were investigated in this study. The gas sensor consisted of a ZnO thin film as the buffer layer and a ZnO single-crystal wire. The ZnO thin film was deposited over a patterning silicon substrate with a gold electrode by the CFR method. The ZnO single-crystal wire was synthesized over the ZnO thin film using zinc and activated carbon as the precursor for the thermal evaporation method at 800 degrees C. The electrical properties of the gas sensors that were prepared for the growth of ZnO single-crystal wire varied with the amount of zinc contained in the precursor. The charged current on the gas sensors increased with the increasing amount of zinc in the precursor. It was concluded that the charged current on the gas sensors was related to ZnO single-crystal wire growth on the silicon substrate area between the two electrodes. The charged current on the gas sensor was enhanced when the ZnO single-crystal wire was exposed to a H(2)S stream. The experimental results obtained in this study confirmed that a ZnO single-crystal wire can be used as a gas sensor for H(2)S.
URI
http://hdl.handle.net/YU.REPOSITORY/25776http://dx.doi.org/10.1166/jnn.2011.3246
ISSN
1533-4880
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공과대학 > 화학공학부 > Articles
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