Correlation between Gas Sensitivity and Crystallite Size in Porous SnO2-Based Sensors
- 1 March 1990
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 19 (3), 441-444
- https://doi.org/10.1246/cl.1990.441
Abstract
The gas sensing properties of SnO2-based sensors in which the size of SnO2 crystallites was controlled by various dopants were investigated. It was found that the gas sensitivity to H2, CO or i-C4H10 increased as the SnO2 crystallite size decreased in the range below 10 nm. Quite high gas sensitivity was achieved at a crystallite size of ca. 5 nm.Keywords
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