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Unusual effects of nanowire-nanowire junctions on the persistent photoconductivity in SnO2 nanowire network devices

dc.contributor.authorCosta, I. M. [UNESP]
dc.contributor.authorde Araújo, E. P.
dc.contributor.authorArantes, A. N.
dc.contributor.authorZaghete, M. A. [UNESP]
dc.contributor.authorChiquito, A. J.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2021-06-25T10:13:50Z
dc.date.available2021-06-25T10:13:50Z
dc.date.issued2021-01-01
dc.description.abstractThe persistent photoconductivity (PPC) effect is a commonly observed behavior in SnO2 nanostructures. Here we described and studied this effect through a comparative study, based on measurements of electronic transport using network as well as single devices built from SnO2 nanowires under different experimental conditions. At room temperature, the PPC effect was observed to be more accentuated in single nanowire devices. It was found that nanowire-nanowire junctions play a fundamental role in the device behavior: the decay time of nanowire network (τ = 52 s) is about three orders of magnitude lower than those of single nanowire (τ = 4.57 × 104 s). Additionally, it was confirmed that the PPC effect was directly related to the amount of oxygen present in the environment and it is destroyed with increasing temperature. Furthermore, the PPC effect was interpreted based on the surface effect that depends on the capture/emission of electrons by the surface states.en
dc.description.affiliationLIEC Instituto de Química Universidade Estadual Paulista - UNESP
dc.description.affiliationNanOLaB Departamento de Física Universidade Federal de São Carlos
dc.description.affiliationUnespLIEC Instituto de Química Universidade Estadual Paulista - UNESP
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2013/07296-2
dc.identifierhttp://dx.doi.org/10.1088/1361-6528/abb7b2
dc.identifier.citationNanotechnology, v. 32, n. 1, 2021.
dc.identifier.doi10.1088/1361-6528/abb7b2
dc.identifier.issn1361-6528
dc.identifier.issn0957-4484
dc.identifier.scopus2-s2.0-85093103643
dc.identifier.urihttp://hdl.handle.net/11449/205347
dc.language.isoeng
dc.relation.ispartofNanotechnology
dc.sourceScopus
dc.subjectNanowires devices
dc.subjectPersistent photoconductivity (PPC)
dc.subjectTin dioxide
dc.titleUnusual effects of nanowire-nanowire junctions on the persistent photoconductivity in SnO2 nanowire network devicesen
dc.typeArtigo
unesp.author.orcid0000-0002-6294-8564 0000-0002-6294-8564[1]

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