ABSTRACT:Zinc oxide and Ce doped nanostructures thin films with different ZnO:Ce ratios (3, 5 and 10) wt% have been prepared by Sol-gel spin coating method at optimum annealing temperature of 550 ˚C. The synthesized samples were characterized by X-ray diffraction (XRD), the spectra of the pure and ZnO: Ce nanostructures correspond to the various planes of a hexagonal ZnO phase, also the crystalline size decreased from about 37nm to 27nm by increasing Ce concentration, atomic force microscopy (AFM) analysis shows that the surface roughness of the samples increased from 1.14 for pure ZnO to 2.15 nm for 10% doping. FESEM measurements show that the ZnO is spherical shape particles which transfers into fibrous-like stripes embedded within a wrinkled shape with different size depending upon the Ce concentration. This change in the surface shape can improve the NO 2 and NH 3 sensing in the two cases of gas sensing measurements, namely static and dynamic case. It was found that the sensitivity was increased by using the same operating temperature. The dynamic results show that the response and recovery times are improved when the Ce concentration is increased. The optical measurements are shown that the transmittance was decreased with increasing of Ce concentration in zinc oxide.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.