Response kinetics of temperature independent resistive oxygen sensor formulations : a comparative study

Title data

Sahner, Kathy ; Moos, Ralf ; Izu, Noriya ; Shin, Woosuck ; Murayama, Norimitsu:
Response kinetics of temperature independent resistive oxygen sensor formulations : a comparative study.
In: Sensors and Actuators B: Chemical. Vol. 113 (2006) Issue 1 . - pp. 112-119.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2005.02.035

Official URL:

Abstract in another language

This contribution compares the response kinetics of two temperature-independent resistive oxygen sensor formulations: LaCu0.3Fe0.7O3−δ (LCF) and La0.05Sr0.95Ti0.65Fe0.35O3−δ (LSTF). Screen-printed thick film sensor specimens were prepared. Sensor characteristics towards oxygen were determined, and additional measurements in the frequency domain were realized: the former indicate a fast and nearly temperature-independent response of LCF and LSTF compositions in the temperature range between 750 and 900 °C. The latter allow conclusions on the underlying sensing mechanism. Whereas oxygen sensitivity of LSTF is exclusively controlled by a reaction step, response of LCF is governed by reaction only at lower temperatures. At higher temperatures, a diffusion process becomes limiting. This different behavior is attributed to different microstructures of the sensitive films.

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 09:37
Last Modified:	06 Apr 2016 06:36
URI:	https://eref.uni-bayreuth.de/id/eprint/6003