期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 202, 期 -, 页码 1002-1009出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2014.04.090
关键词
Indium tin oxide; Formaldehyde; Thin film; Gas/vapour sensors; Volatile organic compound
资金
- DST-PURSE Programme of Sardar Patel University
- University Grants Commission, New Delhi, India
Thin films of indium tin oxide were grown by the direct evaporation technique. The sensors fabricated under the optimized deposition conditions were exposed at room temperature (303 K) to different concentrations of formaldehyde vapours and the relative change in resistance was measured. The effect of the film thickness on the response to test vapours was studied. In order to enhance the sensitivity, sensors with thin promoting layers of different metals and oxide like Cu, Ag and MgO deposited on the top of the film were fabricated and tested. The sensors with improved sensitivity were studied for the elaborate response to formaldehyde vapours at room temperature. (C) 2014 Elsevier B.V. All rights reserved.
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