In the present investigation, we report the synthesis of antimony tin oxide nanoparticles via the chemical precipitation method. The synthesized material was characterized using an X-ray diffractometer, Scanning Electron Microscope, and UV-visible absorption spectroscopy. XRD shows the crystalline nature of the synthesized material, and the crystallite size was estimated using the Debye-Scherer equation, and its minimum value was 3 nm. Pelletization of synthesized material was done using a hydraulic press machine under uniform pressure of 616 MPa. Then the pellets were annealed at 200, 400, and 600°C.
Further, each pellet was put in a humidity-sensing chamber, and corresponding variations in resistance with relative humidity (%RH) were measured. The average sensitivity was calculated by taking the average of all sensitivities ranging from 10 to 90% RH. The average sensitivity of the pellet annealed at 600°C was the best among all the sensing pellets and was 2.18 KΩ/%RH. Results were reproducible ±84% after two months. Humidity sensors have wide applications in industrial production, production process control, environment monitoring, storage, and electrical applications. Therefore, the research devoted to developing new sensor device materials is gaining more attention. Recently, much attention has been focused on modifying metal oxide by doping or substituting with special atoms. Among these doping systems, antimony-doped tin dioxide (ATO) has attracted considerable attention due to its potential applications as gas sensors, humidity sensors, solar batteries, transparent electrodes, electricity conducting coatings, etc. Therefore, different methods have been proposed to prepare ATO, including solid blend, chemistry co-deposition, sol-gel, metal alkoxide hydroxylation, and hydrothermal technologies. If you are looking for high quality, high purity, and cost-effective ATO, or if you require the latest price of ATO, please feel free to email contact mis-asia.
