Structural, optical, electrical and room temperature gas sensing characterizations of spin coated multilayer cobalt-doped tin oxide thin films

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dc.contributor.authorBasyooni, Mohamed A.
dc.contributor.authorEker, Yasin Ramazan
dc.contributor.authorYilmaz, Mucahit
dc.date.accessioned2024-02-23T14:16:18Z
dc.date.available2024-02-23T14:16:18Z
dc.date.issued2020
dc.departmentNEÜen_US
dc.description.abstractThe negative charge trapped in the oxygen species present in metal oxides like Tin Oxide (SnO2) caused an upward band bending and makes these materials as promising sensing materials for CO2 detection. However, sensors based on pure SnO2 may only detect CO2 at high temperature making them un-sensitive at room temperature (RT) (20 degrees C). In this study, SnO2 and Cobalt doped SnO2 (Co:SnO2) thin films of varying thickness were successfully synthesized by sol-gel spin coating technique, followed by annealing. The highly active surface due to high number of divided layers has been determined by X-ray diffraction (XRD) for neat and doped SnO2 deposition. Moreover, the effect of increasing the annealing from 400 to 500 degrees C has been evaluated. The calculated band gap of the multilayer sample annealed at 500 degrees C blue shifted from 3.55 to 3.81 eV with the Co doping. Therefore, the Co doped SnO2 can detect CO2 as low as 30 vol% in atmosphere at RT, meanwhile the un-doped SnO2 coating shows a weak response. Moreover, at high CO2 concentration the recovery time decreases due to the high desorption kinetic. The obtained results illustrate the control of the film's properties gives the opportunity to manage the sensing and optoelectronic performance.en_US
dc.identifier.doi10.1016/j.spmi.2020.106465
dc.identifier.issn0749-6036
dc.identifier.issn1096-3677
dc.identifier.scopus2-s2.0-85080066090en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.spmi.2020.106465
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12618
dc.identifier.volume140en_US
dc.identifier.wosWOS:000525784700023en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAcademic Press Ltd- Elsevier Science Ltden_US
dc.relation.ispartofSuperlattices And Microstructuresen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSno2 Thin Filmsen_US
dc.subjectCobalt Dopingen_US
dc.subjectAnnealing Effecten_US
dc.subjectCo2 Sensitivityen_US
dc.subjectGas Sensoren_US
dc.titleStructural, optical, electrical and room temperature gas sensing characterizations of spin coated multilayer cobalt-doped tin oxide thin filmsen_US
dc.typeArticleen_US

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