Preparation and Characterization of Cerium-Doped Tin Oxide Gas Sensors
In this paper, the precursors were synthesized by microwave hydrothermal method using SnCl4•5H2O and Ce(NO3)3·6H2O as raw material, CO(NH2)2 as precipitants, respectively. Pure SnO2 nanoparticles and cerium-doped SnO2 nanoparticles were obtained. Furthermore, five kinds of SnO2 thick film gas sensors were fabricated from the above SnO2 nanoparticles (the sensors denoted as sensor SC0, SC2, SC3, SC4 and SC6, respectively). The experiment results showed that, compared with pure SnO2 thick film gas sensor, the intrinsic resistance of cerium-doped SnO2 thick film gas sensors decreased, and their sensor responses to acetone vapor increased, which are discussed in relation to the SEM micrographs of thick film sensors.
Shiquan Liu and Min Zuo
H. Y. Xu et al., "Preparation and Characterization of Cerium-Doped Tin Oxide Gas Sensors", Advanced Materials Research, Vols. 306-307, pp. 1450-1455, 2011