Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/97824
Title: Effect of annealing temperature on the crystallization and oxygen sensing property of strontium titanate ferrite sol–gel thin films
Authors: Chow, Chee Lap
Huang, Hui
Ang, Wan Chia
Liu, Hai
Huang, Yizhong
Tse, Man Siu
Tan, Ooi Kiang
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2012
Source: Chow, C. L., Huang, H., Ang, W. C., Liu, H., Huang, Y., Tse, M. S., et al. (2012). Effect of annealing temperature on the crystallization and oxygen sensing property of strontium titanate ferrite sol–gel thin films. Sensors and Actuators B: Chemical.
Series/Report no.: Sensors and actuators B : chemical
Abstract: SrTi0.6Fe0.4O3−δ (STF40) gas sensors were deposited using a novel modified sol–gel route. The influences of thermal annealing (400–750 °C) on the crystallization and oxygen sensing performance were investigated. As revealed by XRD, TEM and XPS studies, the deposited sol–gel thin films had amorphous structure and the formation of cubic perovskite phase started at 450 °C. The crystallization of the films improved with annealing temperature and completed at around 650 °C. The oxygen sensing characterization of the film sensors were carried out using a custom-designed gas sensing characterization system. Abnormal n-type oxygen sensing response was observed for the sensors annealed at 400 and 450 °C, which was found attributed by the n-type amorphous phases that remained in the sol–gel films. On the other hand, good and repeatable p-type oxygen sensing response was obtained for sensors annealed at 500 °C and above.
URI: https://hdl.handle.net/10356/97824
http://hdl.handle.net/10220/12089
ISSN: 0925-4005
DOI: 10.1016/j.snb.2012.08.071
Rights: © 2012 Elsevier B.V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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