Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41467-020-16465-5
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dc.titleContinuously controllable photoconductance in freestanding BiFeO3 by the macroscopic flexoelectric effect
dc.contributor.authorGuo, R
dc.contributor.authorYou, L
dc.contributor.authorLin, W
dc.contributor.authorAbdelsamie, A
dc.contributor.authorShu, X
dc.contributor.authorZhou, G
dc.contributor.authorChen, S
dc.contributor.authorLiu, L
dc.contributor.authorYan, X
dc.contributor.authorWang, J
dc.contributor.authorChen, J
dc.date.accessioned2020-07-23T08:35:16Z
dc.date.available2020-07-23T08:35:16Z
dc.date.issued2020-12-01
dc.identifier.citationGuo, R, You, L, Lin, W, Abdelsamie, A, Shu, X, Zhou, G, Chen, S, Liu, L, Yan, X, Wang, J, Chen, J (2020-12-01). Continuously controllable photoconductance in freestanding BiFeO3 by the macroscopic flexoelectric effect. Nature Communications 11 (1) : 2571-. ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-020-16465-5
dc.identifier.issn20411723
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/171686
dc.description.abstract© 2020, The Author(s). Flexoelectricity induced by the strain gradient is attracting much attention due to its potential applications in electronic devices. Here, by combining a tunable flexoelectric effect and the ferroelectric photovoltaic effect, we demonstrate the continuous tunability of photoconductance in BiFeO3 films. The BiFeO3 film epitaxially grown on SrTiO3 is transferred to a flexible substrate by dissolving a sacrificing layer. The tunable flexoelectricity is achieved by bending the flexible substrate which induces a nonuniform lattice distortion in BiFeO3 and thus influences the inversion asymmetry of the film. Multilevel conductance is thus realized through the coupling between flexoelectric and ferroelectric photovoltaic effect in freestanding BiFeO3. The strain gradient induced multilevel photoconductance shows very good reproducibility by bending the flexible BiFeO3 device. This control strategy offers an alternative degree of freedom to tailor the physical properties of flexible devices and thus provides a compelling toolbox for flexible materials in a wide range of applications.
dc.publisherNature Research
dc.sourceElements
dc.typeArticle
dc.date.updated2020-07-23T05:16:42Z
dc.contributor.departmentDEPT OF MATERIALS SCIENCE & ENGINEERING
dc.description.doi10.1038/s41467-020-16465-5
dc.description.sourcetitleNature Communications
dc.description.volume11
dc.description.issue1
dc.description.page2571-
dc.published.statePublished
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