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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2002     Display Documents



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ID: 7186.0, MPI für Festkörperforschung / FKF Publikationen 2002
Space charge influenced oxygen incorporation in oxides: in how far does it contribute to the drift of Taguchi sensors?
Authors:Jamnik, J.; Kamp, B.; Merkle, R.; Maier, J.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Solid State Ionics
Volume:150
Issue / Number:1-2
Start Page:157
End Page:166
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The change of resistance of SnO2 upon the change of oxygen
partial pressure-a well known sensor effect-is studied
theoretically. A linearised drift-diffusion model is used. The
boundary conditions are formulated in terms of reaction rate
equations. Resistance vs. time curves as well as the evolution
of the concentration profiles of electrons and oxygen vacancies
are numerically calculated anti discussed. Analytical
approximations are derived for the corresponding time
constants. Relevance of the model for commercial sensors is
discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
Free Keywords:sensor; space charge; simulation; oxygen incorporation; mixed
conductor
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Natl Inst Chem, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
; Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
Identifiers:ISI:000177687600015
ISSN:0167-2738
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