THE EFFECT OF FILM OXYGEN-CONTENT ON SNOX, GAS-SENSOR SELECTIVITY

Authors
VLACHOS DS PAPADOPOULOS CA AVARITSIOTIS JN
Citation
Ds. Vlachos et al., THE EFFECT OF FILM OXYGEN-CONTENT ON SNOX, GAS-SENSOR SELECTIVITY, Sensors and actuators. B, Chemical, 25(1-3), 1995, pp. 883-885
Citations number
7
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
Sensors and actuators. B, Chemical → ACNP
ISSN journal
09254005
Volume
25
Issue
1-3
Year of publication
1995
Pages
883 - 885
Database
ISI
SICI code
0925-4005(1995)25:1-3<883:TEOFOO>2.0.ZU;2-2
Abstract
The effect of the oxygen content in tin oxide films on selectivity in gas detection has been studied. The experimental results show that sen sors with different Sn:O ratios exhibit different behaviour in respons e to CO and ethanol. A theoretical explanation of this phenomenon is p resented, which is based on the density of oxygen vacancies at the sur face. Moreover, a simple parametric method using three sensors with di fferent Sn:O ratios has been tested to distinguish between CO and etha nol.