Modelling and simulation of abnormal behaviour of thick-film tin oxide gas sensors in CO

Skafidas, PD; Vlachos, DS; Avaritsiotis, JN

dc.contributor.author	Skafidas, PD	en
dc.contributor.author	Vlachos, DS	en
dc.contributor.author	Avaritsiotis, JN	en
dc.date.accessioned	2014-03-01T01:09:59Z
dc.date.available	2014-03-01T01:09:59Z
dc.date.issued	1994	en
dc.identifier.issn	09254005	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11277
dc.subject	Carbon monoxide	en
dc.subject	Carlo simulations	en
dc.subject	Modelling	en
dc.subject	Tin oxide gas sensors	en
dc.subject.other	Absorption	en
dc.subject.other	Carbon monoxide	en
dc.subject.other	Chemisorption	en
dc.subject.other	Computational methods	en
dc.subject.other	Mathematical models	en
dc.subject.other	Monte Carlo methods	en
dc.subject.other	Oxygen	en
dc.subject.other	Thick films	en
dc.subject.other	Monte Carlo simulation	en
dc.subject.other	Oxide resistive type gas sensors	en
dc.subject.other	Oxygen absorption	en
dc.subject.other	Semiconductor gas sensors	en
dc.subject.other	Temperature profile desorption	en
dc.subject.other	Thick film tin oxide gas sensors	en
dc.subject.other	Gas detectors	en
dc.title	Modelling and simulation of abnormal behaviour of thick-film tin oxide gas sensors in CO	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0925-4005(94)80012-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0925-4005(94)80012-X	en
heal.publicationDate	1994	en
heal.abstract	A new model is proposed that takes into account oxygen vacancies in tin oxide resistive-type, assuming that lattice oxygen modifies the rate of oxygen adsorption. Applying this hypothesis in a Monte Carlo simulation, effects observed in thick-film samples are explained. Morevoer, computational techniques have been used in order to simulate different thick-film structures, and the role of both surface coverage and reduction in the sensing mechanism is investigated. The simulation results are in good qualitative agreement with the experimental results obtained from our samples. In particular, phenomena like undershoot and overshoot of the sample's resistance, very long recovery times and poisoning of the sensor surface are discussed. © 1994.	en
heal.journalName	Sensors and Actuators: B. Chemical	en
dc.identifier.doi	10.1016/0925-4005(94)80012-X	en
dc.identifier.volume	21	en
dc.identifier.issue	2	en
dc.identifier.spage	109	en
dc.identifier.epage	121	en