Pd modified CO sensors with oscillatory response

Author

Li, LiLin ; Wlodarski, Wojtek ; Akolekar, Deepak ; Bhagava, Suresh ; Ippolito, Samuel

Author_Institution

Sch. of Electr. & Comput. Eng., R. Melbourne Inst. of Technol., Vic., Australia

fYear

2004

fDate

24-27 Oct. 2004

Firstpage

150

Abstract

In this paper, oscillatory changes in the conductance of Pd modified SnO₂ bead and Pd modified Pt coil in the presence of CO were investigated and compared. Changes in frequency were found for both sensors with varied CO concentrations. For the Pd modified SnO₂ sensor, the frequency of the waveform increased with increasing CO concentration, while for the Pd modified Pt coil, the frequency decreased. Influences of the surface temperature to CO responses were examined. The selectivity against H₂ was also tested.

Keywords

II-VI semiconductors; carbon compounds; coils; electric sensing devices; electron device testing; gas sensors; oscillations; palladium; platinum; semiconductor device testing; tin compounds; CO; CO concentration; H₂ selectivity; Pd; Pd modified CO sensors; Pd modified Pt coil; Pd modified SnO₂ bead; Pd modified SnO₂ sensor; Pt; SnO₂; conductance; oscillatory response; surface temperature; Australia; Coils; Cyclic redundancy check; Frequency; Gas detectors; Resistors; Sensor phenomena and characterization; Temperature sensors; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2004. Proceedings of IEEE

Print_ISBN

0-7803-8692-2

Type

conf

DOI

10.1109/ICSENS.2004.1426122

Filename

1426122