P1.7.11 Highly sensitive and rapid NO2 gas sensors based on ZnO nanostructures and the morphology effect on their sensing performances
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.7 Nanostructured Metal Oxide-based Sensors
- Author(s)
- A. Boudiba, C. Zhang, M. Debliquy - Service de Science des Matériaux, Faculté Polytechnique, Université de Mons (Belgium), R. Snyders - Laboratoire de Chimie des Interactions Plasma-Surface, Université de Mons (Belgium), D. Lahem, M. Olivier - Materia Nova Research Centre (Belgium)
- Pages
- 1089 - 1091
- DOI
- 10.5162/IMCS2012/P1.7.11
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
ZnO nanostructures with different morphologies (nanoparticles, nanorods) have been synthesized using different methods including chemical vapor deposition (CVD) and Sol-Gel. The obtained ZnO nanostructures have been characterized with TEM, SEM, XRD and XPS. Thick films based on the prepared ZnO nanostructures were coated on alumina substrates fitted with gold electrodes and a platinum heater. The responses to NO2 (= 1 ppm) of the different types of ZnO sensors have been studied at working temperatures ranging from 200 to 320°C at 50% of relative humidity. The effects of the synthesis method and the morphology of the ZnO particles on the electrical properties and sensing performances (responses, response and recovery times) of the sensors were demonstrated.