Effect of air humidity on gas response of SnO2 thin film ozone sensors

Mesopororous Sn0.9−xIn0.1Cux(I)O2−δ gas sensors with selectivity to H2S working under humid air conditions

“…We evaluated a larger (OH plus H 2 O) fraction by $10% for the sample SIC3 as compared to SIC1 and SIC2 beyond the errors in our relative concentrations assignments. This finding is consistent with our sensing measurements indicating SIC3 sample as the most sensitive material as well as in line with reliable results reported in the literature [29][30][31]. …”

Low‐Temperature Growth of SnO2 Nanorod Arrays and Tunable n–p–n Sensing Response of a ZnO/SnO2 Heterojunction for Exclusive Hydrogen Sensors

“…The adsorption of water molecules on the surface of SnO 2 at low temperature results in the formation of donors attributed to hydroxyl groups bound to the Sn atoms, [ 37 ] which may partially offset the p-type response to H 2 gas in our ZnO-SnO 2 nanorod sensor. However, the hydroxyl groups begin to desorb at T > 200-250 ° C and are virtually absent at T > 400 ° C. [ 38 ] At high operating temperatures of 350 ° C, therefore, the p-type response to 100 ppm H 2 of our ZnO-SnO 2 nanorod sensor is still dominant as the infl uence of RH becomes insignifi cant. and was much thicker when compared to the Zn-O-Sn diffusion layer (as shown in Figure S3d).…”

The influence of gold nanoparticles on the conductivity response of SnO2-based thin film gas sensors

“…6-9 corresponds to the parameters of the SnO 2 gas sensors before any surface treatment. Detailed analysis of SnO 2 gas sensor parameters with an unmodified surface can be found in previously published articles [34][35][36][46][47][48][49].…”