CdO: SnO2 Composite UV-Assisted Room Temperature Ozone Sensor
Mohammed O. Salman, Mohammed Aboud Kadhim, Abed A. Khalefa
Abstract
Cadmium-tin oxide (CSO) thin films were fabricated by spray pyrolysis method at different substrate temperatures (Ts). The results showed a significant effect of Ts on the surface morphology and the electrical properties, which in turn has a significant effect on sensor gas sensitivity. The sample prepared at 400 °C appeared in the form of a donut shape, which has the best ozone sensitivity. No ozone sensitivity appeared in-dark, while showed good sensitivity when illuminated with UV at room temperature (RT). The study showed that the photon exposure method can substitute for the conventional method of sensors heating.
Topics & Concepts
OzoneTin oxideMaterials scienceSubstrate (aquarium)Spray pyrolysisSensitivity (control systems)Composite numberThin filmChemical engineeringAnalytical Chemistry (journal)OxideComposite materialChemistryNanotechnologyEnvironmental chemistryMetallurgyElectronic engineeringOrganic chemistryOceanographyEngineeringGeologyGas Sensing Nanomaterials and SensorsAnalytical Chemistry and SensorsZnO doping and properties