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Micro-structure sensors based on ZnO microcrystals with contact-controlled ethanol sensing.
- Source :
-
Chinese Science Bulletin . Dec2009, Vol. 54 Issue 23, p4371-4375. 5p. - Publication Year :
- 2009
-
Abstract
- ZnO microcrystals are synthesized through a facile solution method and characterized by field-emission scanning electron microscopy, transmission electron microscopy, selected area electron diffraction and X-ray diffraction. The ethanol sensing properties of these microcrystals are investigated by spin-coating them on a silicon substrate with Pt electrodes to fabricate a micro-structure sensor. The sensitivity is up to 8 when the sensor is exposed to 50 ppm ethanol, and the response time and recovery time are 10 s and 20 s, respectively. A contact-controlled model is established to explain the sensing properties of the microcrystals, which provides another approach to realize high-performance gas sensors. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10016538
- Volume :
- 54
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- Chinese Science Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 47556179
- Full Text :
- https://doi.org/10.1007/s11434-009-0662-9