Localized Energy Band Bending in ZnO Nanorods Decorated with Au Nanoparticles.
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| Title: | Localized Energy Band Bending in ZnO Nanorods Decorated with Au Nanoparticles. |
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| Authors: | Bruno, Luca1,2 (AUTHOR) giorgia.franzo@ct.infn.it, Strano, Vincenzina1,2 (AUTHOR) stravicky@hotmail.it, Scuderi, Mario3 (AUTHOR) mario.scuderi@imm.cnr.it, Franzò, Giorgia2 (AUTHOR), Priolo, Francesco1,2 (AUTHOR) francesco.priolo@ct.infn.it, Mirabella, Salvo1,2 (AUTHOR) salvo.mirabella@dfa.unict.it |
| Source: | Nanomaterials (2079-4991). Oct2021, Vol. 11 Issue 10, p2718. 1p. |
| Subjects: | Energy bands, Nanorods, Rutherford backscattering spectrometry, Gold nanoparticles, Chemical solution deposition, Transmission electron microscopy |
| Abstract: | Surface decoration by means of metal nanostructures is an effective way to locally modify the electronic properties of materials. The decoration of ZnO nanorods by means of Au nanoparticles was experimentally investigated and modelled in terms of energy band bending. ZnO nanorods were synthesized by chemical bath deposition. Decoration with Au nanoparticles was achieved by immersion in a colloidal solution obtained through the modified Turkevich method. The surface of ZnO nanorods was quantitatively investigated by Scanning Electron Microscopy, Transmission Electron Microscopy and Rutherford Backscattering Spectrometry. The Photoluminescence and Cathodoluminescence of bare and decorated ZnO nanorods were investigated, as well as the band bending through Mott–Schottky electrochemical analyses. Decoration with Au nanoparticles induced a 10 times reduction in free electrons below the surface of ZnO, together with a decrease in UV luminescence and an increase in visible-UV intensity ratio. The effect of decoration was modelled with a nano-Schottky junction at ZnO surface below the Au nanoparticle with a Multiphysics approach. An extensive electric field with a specific halo effect formed beneath the metal–semiconductor interface. ZnO nanorod decoration with Au nanoparticles was shown to be a versatile method to tailor the electronic properties at the semiconductor surface. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 153310685 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Localized Energy Band Bending in ZnO Nanorods Decorated with Au Nanoparticles. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Bruno%2C+Luca%22">Bruno, Luca</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> giorgia.franzo@ct.infn.it</i><br /><searchLink fieldCode="AR" term="%22Strano%2C+Vincenzina%22">Strano, Vincenzina</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> stravicky@hotmail.it</i><br /><searchLink fieldCode="AR" term="%22Scuderi%2C+Mario%22">Scuderi, Mario</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> mario.scuderi@imm.cnr.it</i><br /><searchLink fieldCode="AR" term="%22Franzò%2C+Giorgia%22">Franzò, Giorgia</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Priolo%2C+Francesco%22">Priolo, Francesco</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> francesco.priolo@ct.infn.it</i><br /><searchLink fieldCode="AR" term="%22Mirabella%2C+Salvo%22">Mirabella, Salvo</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> salvo.mirabella@dfa.unict.it</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Oct2021, Vol. 11 Issue 10, p2718. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Energy+bands%22">Energy bands</searchLink><br /><searchLink fieldCode="DE" term="%22Nanorods%22">Nanorods</searchLink><br /><searchLink fieldCode="DE" term="%22Rutherford+backscattering+spectrometry%22">Rutherford backscattering spectrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Gold+nanoparticles%22">Gold nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+solution+deposition%22">Chemical solution deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Transmission+electron+microscopy%22">Transmission electron microscopy</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Surface decoration by means of metal nanostructures is an effective way to locally modify the electronic properties of materials. The decoration of ZnO nanorods by means of Au nanoparticles was experimentally investigated and modelled in terms of energy band bending. ZnO nanorods were synthesized by chemical bath deposition. Decoration with Au nanoparticles was achieved by immersion in a colloidal solution obtained through the modified Turkevich method. The surface of ZnO nanorods was quantitatively investigated by Scanning Electron Microscopy, Transmission Electron Microscopy and Rutherford Backscattering Spectrometry. The Photoluminescence and Cathodoluminescence of bare and decorated ZnO nanorods were investigated, as well as the band bending through Mott–Schottky electrochemical analyses. Decoration with Au nanoparticles induced a 10 times reduction in free electrons below the surface of ZnO, together with a decrease in UV luminescence and an increase in visible-UV intensity ratio. The effect of decoration was modelled with a nano-Schottky junction at ZnO surface below the Au nanoparticle with a Multiphysics approach. An extensive electric field with a specific halo effect formed beneath the metal–semiconductor interface. ZnO nanorod decoration with Au nanoparticles was shown to be a versatile method to tailor the electronic properties at the semiconductor surface. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/nano11102718 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: 2718 Subjects: – SubjectFull: Energy bands Type: general – SubjectFull: Nanorods Type: general – SubjectFull: Rutherford backscattering spectrometry Type: general – SubjectFull: Gold nanoparticles Type: general – SubjectFull: Chemical solution deposition Type: general – SubjectFull: Transmission electron microscopy Type: general Titles: – TitleFull: Localized Energy Band Bending in ZnO Nanorods Decorated with Au Nanoparticles. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Bruno, Luca – PersonEntity: Name: NameFull: Strano, Vincenzina – PersonEntity: Name: NameFull: Scuderi, Mario – PersonEntity: Name: NameFull: Franzò, Giorgia – PersonEntity: Name: NameFull: Priolo, Francesco – PersonEntity: Name: NameFull: Mirabella, Salvo IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 11 – Type: issue Value: 10 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
| ResultId | 1 |
