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Issue 23, 2005
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Synthesis and gas sensing properties of ZnO single crystal flakes

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Abstract

We report a new two-dimensional structure, ZnO single crystal flakes, synthesized using a simple combustion CVD process. The flakes grew upward from the Si substrate. The as-grown ZnO flakes were less than 200 nm thick and 10–20 µm wide. Unlike most 1-D ZnO structures with [0001] growth direction, ZnO flakes grow along <10[1 with combining macron]0> directions. A gas sensor based on a 200 nm thick ZnO flake exhibited fast response–recovery and high sensitivity to ethanol vapor. These as-synthesized single crystal ZnO flakes could have important technological applications.

Graphical abstract: Synthesis and gas sensing properties of ZnO single crystal flakes

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Publication details

The article was received on 28 Feb 2005, accepted on 31 Mar 2005 and first published on 11 Apr 2005


Article type: Paper
DOI: 10.1039/B502974K
Citation: J. Mater. Chem., 2005,15, 2316-2320
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    Synthesis and gas sensing properties of ZnO single crystal flakes

    Y. Liu, J. Dong, P. J. Hesketh and M. Liu, J. Mater. Chem., 2005, 15, 2316
    DOI: 10.1039/B502974K

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