期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 77, 期 1-2, 页码 478-483出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-4005(01)00738-9
关键词
molybdenum; tungsten; sol-gel; gas sensors; thin-film
Oxygen gas sensing properties of molybdenum trioxide and tungsten trioxide (MoO3-WO3) mixed metal oxide thin-films are investigated. Various MoO3-WO3 ratio thin-film samples are deposited onto silicon (1 0 0) and sapphire substrates via the sol-gel route. SEM analysis showed the presence of MoO3 orthorhombic phase, abating as WO3 dominated the mixed system. MoO3-WO3 sensors exhibited a linear response to O-2 concentrations varying from 10 to 10,000 ppm. The MoO3-WO3 film response was stable and reproducible operating at an optimal temperature of 420 degreesC. (C) 2001 Elsevier Science B.V. All rights reserved.
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