Effect of variation of sintering temperature on the gas sensing characteristics of SnO2:Cu (Cu=9 wt.%) system

Introduction of δ-Al2O3/Cu2O material for H2 gas-sensing applications

“…5, it is clear that the nature of calibration curves for both the gases of CO and H 2 is nearly identical. Both the curves show the standard [11,12] three-region behaviour as (1) sharp initial rise in SF up to about 500 ppm (high sensitivity region), (ii) nearly linear intermediate region and (iii) a third region in which the sensor saturates (saturation region). For both the gases CO and H 2 , the sensor saturates at nearly the same value of f 0.8%.…”

“…[1 -6]. More recently, we have also reported the improvement in the sensitivity properties of SnO 2 material by: (1) replacing CuO by Cu, (2) changing the concentration level of Cu and (3) varying the sintering temperature [11,12]. On the other hand, Al 2 O 3 is found to have wide range of applications viz.…”

Influence of crystallinity on CO gas sensing for TiO2 films

“…It has recently been shown that higher annealing and sintering temperatures for metal-oxide thick film sensors can improve the gas sensing response via altering the gas adsorption kinetics and concentration of adsorption sites [21][22][23]. These elevated temperatures lead to more necking between particles and reduced surface area which are two factors known to hinder sensing response.…”

CO and LPG Sensing Properties of Cu-Doped SnO2 Pellets Using Pulsed Laser Ablation with the Effect of Ablation Time and Sintering Temperature

“…SnO 2 is one of the most widely used semiconducting materials for gas sensing due to its high sensitivity toward low small concentration of toxic gases 1–3 . SnO 2 ‐based gas sensors have been synthesized in various forms such as thin 4 or thick films 5 and pellets 6 . Among the structural parameters the crystallite size, film thickness, and porosity in the sensing layer have a pronounced effect on gas sensitivity 7,8 .…”