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Selectivity enhancement of p-type semiconducting hydrocarbon sensors : the use of sol precipitated nano-powders

Title data

Sahner, Kathy ; Schönauer-Kamin, Daniela ; Matam, Mahesh ; Post, Michael L. ; Moos, Ralf:
Selectivity enhancement of p-type semiconducting hydrocarbon sensors : the use of sol precipitated nano-powders.
In: Sensors and Actuators B: Chemical. Vol. 130 (14 March 2008) Issue 1 . - pp. 470-476.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2007.09.024

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 method for preparing sol-precipitated Sr(Ti0.8Fe0.2)O3−δ powders yielding particle sizes of about 70 nm is presented. Screen-printed films based on such nano-scaled powders are compared and contrasted to conventional micro-scaled thick films.

By employing sol-precipitated powders, the hydrocarbon sensitivity of the sensor devices is improved. For unsaturated hydrocarbons, resistance changes similar to those of thin films prepared by pulsed laser deposition are observed, thus combining the fast sensor response of Sr(Ti0.8Fe0.2)O3−δ thick films with the high response (R/R0) values observed for thin films. The pronounced cross-interference of NO and CO can be eliminated by means of an additional zeolite layer deposited on top of the nano-scaled sensor film.

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: 27 Jan 2015 11:43
Last Modified: 06 Apr 2016 09:41
URI: https://eref.uni-bayreuth.de/id/eprint/5985