Humidity sensing properties of Li-iron oxide based thin films

Authors
Neri, G Bonavita, A Galvagno, S Pace, C Patane, S Arena, A
Citation
G. Neri et al., Humidity sensing properties of Li-iron oxide based thin films, SENS ACTU-B, 73(2-3), 2001, pp. 89-94
Citations number
19
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005 → ACNP
Volume
73
Issue
2-3
Year of publication
2001
Pages
89 - 94
Database
ISI
SICI code
0925-4005(20010310)73:2-3<89:HSPOLO>2.0.ZU;2-R
Abstract
Li-doped iron oxide thin films deposited on a porous ceramic substrate by a liquid-phase method (LPD) were investigated as humidity sensors. Large var iations in the resistance, up to about 4-5 order of magnitude, were observe d by changing the relative humidity (RH) between 10 and 90%. The investigat ed sensors show a quick and reversible response to cyclic variations in the RH. The effects of pretreatment and Li content were investigated. The role of Li on the response to water vapour of iron oxide thin films is discusse d. (C) 2001 Elsevier Science B.V. All rights reserved.