4.4.5 Invited: Surface Ionization on Metal Oxide Gas Sensors
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- 4.4 EU NetAir (Special Session) I
- Author(s)
- A. Ponzoni, D. Zappa, E. Comin, G. Faglia, G. Sberveglieri - CNR-IDASC SENSOR Lab (Italy)
- Pages
- 391 - 394
- DOI
- 10.5162/IMCS2012/4.4.5
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
In this work we present the development of surface ionization (SI) gas sensors with planar layout based on bundles of nanorods. We exploit a simple method, compatible with planar deposition techniques, to integrate the layer of nanorods into the functional device. The comparison between the same device provided and not provided with the nanorod layer shows that the measured signal arises from nanorods and not from the Pt electrodes. We further show that the adopted configuration and the exploitation of the nanorod morphology allow to reduce the working temperature from 600-900 °C to 300-400 °C and the voltage bias form 10000 V/cm to 1500 V/cm with respect to the traditional vertical layout.