Applied Physics A

, Volume 80, Issue 7, pp 1451–1454 | Cite as

Synthesis and properties of multipod-shaped ZnO nanorods for gas-sensor applications

Article

Abstract

We reported the synthesis and optical properties of ZnO nanorods with multipod shapes, and their applications as gas sensors. The multipod-shaped ZnO (M-ZnO ) nanorods, having tens of needle-like nanorods united at a common junction, exhibited different structural and optical characters from those of the tetrapod-shaped ZnO (T-ZnO) nanorods. Employing the M-ZnO and the T-ZnO nanorods, respectively, gas sensors were prepared and tested for the detection of ethanol in air. It was found that the M-ZnO devices had an improved sensing performance in comparison with that of the T-ZnO sensors, of which a possible sensing mechanism related to a surface reaction process was discussed.

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.Institute of PhysicsChinese Academy of SciencesBeijingChina

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