Synthesis and gas sensing properties of ZnO single crystal flakes
- 11 April 2005
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 15 (23) , 2316-2320
- https://doi.org/10.1039/b502974k
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 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.Keywords
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