G.G. Mandayo

TL;DR: In this article, the electrical response of SnO 2 thin film as a function of thickness was studied in order to determine the optimum of this parameter to detect carbon monoxide, finding out that thickness around 200nm showed the highest response Structural characteristics of tin oxide such as grain size and net distortions were also analysed On the other hand, a study of two catalytic metals (Pt and Pd) and their influence on sensing parameters was also carried out Tests under controlled atmospheres and XPS analyses showed that the doping technique that provided a suitable quantity and doping profile of metal for CO

TL;DR: In this article, the up-to-now developed formaldehyde conductometric gas sensors are reviewed focusing on the strategies employed to enhance their response, and the effect of the grain size of conventional (thick or thin) films and diameter of the nanofibers is discussed.

TL;DR: In this article, a photoactivated room temperature BaTiO 3 -CuO thin film for carbon dioxide detection is presented and the response time to carbon dioxide is around 2min and the sensitivity shows a logarithmic relation between 500 and 5000 ppm of CO 2.

TL;DR: In this article, the influence of the sensing layer thickness and annealing treatment on the structural, optical and electrical properties of the samples is studied, and the potential barrier height is linked to oxygen ionosorption on the semiconductor surface.

TL;DR: In this article, the sensing behavior of tin dioxide nanowires has been tested under different concentrations of formaldehyde (HCHO), showing a high sensitivity and very short response and recovery times even at low operating temperatures (130°C).