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P-type semiconducting perovskite sensors for reducing gases: model description

Title data

Sahner, Kathy ; Moos, Ralf:
P-type semiconducting perovskite sensors for reducing gases: model description.
In: Sensor Letters. Vol. 6 (2008) Issue 6 . - pp. 808-811.
ISSN 1546-198X
DOI: https://doi.org/10.1166/sl.2008.506

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
No information01SF0201 9.2

Project financing: Bundesministerium für Bildung und Forschung

Abstract in another language

A mechanistic model to describe the hydrocarbon sensitivity of perovskite SrTi1−xFexO3-δ thick films at intermediate temperatures between 350 °C and 450 °C is presented. In contrast to the mechanistic model of n-type semiconductors, i.e., sensors of the Taguchi type, a novel microscopic mechanism is proposed. Rather than limiting electronic interactions with reducing gases to space charge layers near the sensor surface, the material bulk is assumed to participate in gas sensing. From a technical point of view, thick films prepared with nano-scaled sol-precipitated powders are of particular interest in this study. These films present very good sensor characteristics, which is also described with the novel model.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 26 Jan 2015 10:18
Last Modified: 06 Apr 2016 09:07
URI: https://eref.uni-bayreuth.de/id/eprint/5700