Hierarchical zinc oxide nanobrushes ultraviolet photodetector

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dc.contributor.authorAlenezi, Mohammad R.
dc.contributor.authorAlmeshal, Abdullah M.
dc.contributor.authorAlkhaledi, Abdullah N. F. N. R.
dc.date.accessioned2022-07-28T10:21:46Z
dc.date.available2022-07-28T10:21:46Z
dc.date.issued2022-07-12
dc.description.abstractIn order to synthesise hierarchical zinc oxide (ZnO) nanomaterials with a high surface-to-volume ratio, a well-controlled multistage hydrothermal method was developed. Hierarchical ZnO nanobrushes (ZNBs) built from initial mono-morphological nanomaterials, ZnO nanowires (ZNWs), and ZnO nanoplates (ZNPs) were developed using sequential nucleation and growth following a hydrothermal process. Hierarchical nanomaterials which are comprised of one-dimensional (1D) nanowire building blocks were obtained via a zinc ion source (zinc nitrate) during the second growth phase. In comparison to their first mono-morphological equivalents, the hierarchical nanomaterials which were grown showed improved ultraviolet (UV) detection, as well as improved sensitivity (∼104), an ultra-fast response time (235 ms), and a good recovery time (310 ms). Improvements to the response and recovery times were a result of distinct nanojunction barrier-dominated resistance. Moreover, the enhanced sensitivity of the ZNB photodetector (PD) was because of the reduced dimensionality and the ultrahigh surface-to-volume ratio. This work lays the groundwork for lower-cost, larger-scale, and lower-temperature production of high-performance nanostructured ZnO-based PDs on transparent and flexible substrates.en_UK
dc.identifier.citationAlenezi MR, Almeshal AM, Alkhaledi ANFNR. (2022) Hierarchical zinc oxide nanobrushes ultraviolet photodetector. Micro and Nano Letters, Volume 17, Issue 12, 21 October 2022, pp. 299-308en_UK
dc.identifier.issn1750-0443
dc.identifier.urihttps://doi.org/10.1049/mna2.12135
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/18243
dc.language.isoenen_UK
dc.publisherWiley for Institution of Engineering and Technology (IET)en_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleHierarchical zinc oxide nanobrushes ultraviolet photodetectoren_UK
dc.typeArticleen_UK

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