Investigation of photosensitive properties of novel TiO2:Cu2O mixed complex interlayered heterojunction: showcasing experimental and DFT calculations

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dc.contributor.authorAksan, Sinem
dc.contributor.authorHussaini, Ali Akbar
dc.contributor.authorErdal, Mehmet Okan
dc.contributor.authorTastan, Oguzhan
dc.contributor.authorGuzel, Rabia
dc.contributor.authorSacmaci, Serife
dc.contributor.authorYildirim, Murat
dc.date.accessioned2024-02-23T13:59:25Z
dc.date.available2024-02-23T13:59:25Z
dc.date.issued2024
dc.departmentNEÜen_US
dc.description.abstractIn this study, we investigated the effect of different reducing agents (ascorbic acid and sodium boron hydride) on optoelectronic properties of TiO2:Cu2O nanocomposites. The TiO2:Cu2O nanocomposites were characterized using X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM), and Energy dispersive X-ray (EDX). The electronic properties of the structure were calculated with the density functional theory (DFT). Both devices showed good responsivity and detectivity against light intensities. The photosensitivity of the devices had linear increasing profile with increasing light power. It is noteworthy that both devices demonstrated well-rectifying behaviors as a result of having low reverse bias and greater forward bias currents at the I-V characteristics in low light. The reduction of the band gap shifted the absorption band gap from the visible light region to the red edge. Density Functional Theory (DFT) calculations which has been done by using CASTEP are in good agreement with our experimental results. Ti(1 - x)CuxO2 (7.5:1) band gap is 1.18 eV which is compared to the Shockley ve Quiser (SQ) limit. Ti(1 - x)CuxO2 (15:1) band gap is 1.83 eV while the band gap is 2.28 eV for stoichiometric TiO2 with our DFT calculations. Thus, the band gap narrowed with increasing Cu amount. This provides an improvement in light absorption. In conclusion, the results demonstrate that Al/TiO2:Cu2O/p-Si can be used in optoelectronic applications.en_US
dc.description.sponsorshipSelcuk Universityen_US
dc.description.sponsorshipNo Statement Availableen_US
dc.identifier.doi10.1007/s11082-023-06266-7
dc.identifier.issn0306-8919
dc.identifier.issn1572-817X
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85183578708en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1007/s11082-023-06266-7
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11177
dc.identifier.volume56en_US
dc.identifier.wosWOS:001157385200004en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofOptical And Quantum Electronicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectNanocompositeen_US
dc.subjectPhotodiodeen_US
dc.subjectTio2:Cu2oen_US
dc.subjectUltrasonic Spray Pyrolysisen_US
dc.subjectDften_US
dc.titleInvestigation of photosensitive properties of novel TiO2:Cu2O mixed complex interlayered heterojunction: showcasing experimental and DFT calculationsen_US
dc.typeArticleen_US

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