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Carbon dioxide sensitivity of La-doped thick film tin oxide gas sensor
- Authors
- Kim, M. Y.; Choi, Y. N.; Bae, J. M.; Oh, T. S.
- Issue Date
- Jan-2012
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Films; Milling; Sensors; SnO2
- Citation
- CERAMICS INTERNATIONAL, v.38, no.SUPPL. 1, pp.S657 - S660
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 38
- Number
- SUPPL. 1
- Start Page
- S657
- End Page
- S660
- ISSN
- 0272-8842
- Abstract
- The CO2 sensitivity of a La-doped SnO2 thick film was characterized with variation of the La2O3 content up to 4.5 mol%. Effects of mechanical milling of SnO2 powders on the CO2 sensitivity of a SnO2 thick film sensor were also studied. When exposed to 1000 ppm of CO2, the sensitivity of a SnO2 thick film sensor was improved from 1.14 to 1.52 with increasing the La2O3 doping concentration from 0 mol% to 2.2 mol%. Enhanced sensitivities of 1.45-1.51 were obtained for the thick film sensors processed with mechanically milled SnO2 powders. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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