Abstract
Abstract An influence of processing temperature on structural, morphological, and chemiresistive properties of cerium oxide (CeO2) films, deposited on glass substrate by a spin-coating method and composed of nanocrystallites (NCs), has been systematically investigated and reported. As-deposited CeO2 films demonstrate the cubic polycrystalline crystal structure and mixed-agglomerated type of surface morphology with several crevices, elevating easy and deep percolation to gas molecules for enhanced adsorption-desorption process. Chemiresistive gas sensing performance of CeO2 films studied to various target gases and operating temperatures; demonstrates excellent selectivity, rapid response/recovery time signatures, and consistent operation repeatability to nitrogen dioxide (NO2) gas @200 °C, over other target gases, along with superior response repeatability. The response signature of sensor increases from 6% to 45% when NO2 gas ppm level is increased from 5 to 100. Chemiresistive change in the CeO2 film sensor in presence of NO2 gas has been studied thoroughly and explored using band model and impedance spectroscopy analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
