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Hematite nanostructuring using electrohydrodynamic lithography

Boudoire, Florent and Toth, Rita and Heier, Jakob and Braun, Artur and Constable, Edwin C.. (2014) Hematite nanostructuring using electrohydrodynamic lithography. Applied Surface Science, 305. pp. 62-66.

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Official URL: http://edoc.unibas.ch/dok/A6337899

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Abstract

Tailoring hematite thin film nanostructure is particularly interesting since this oxide`s function is closely related to its structure, for example when implemented as a photoanode in water splitting solar cells. In this study, electrohydrodynamic destabilization was designed to grow hematite nanodroplets with morphologies controlled by a master electrode. A polymer/iron salt film was destabilized by electrohydrodynamic destabilization and the resulting structures were pyrolysed to achieve crystalline a-Fe203 nanodroplets of 30 nm height and 70 nm radius. NEXAFS spectroscopy proved that the structures contain ferrihydrite, which is converted into hematite during pyrolysis, while the polymer was decomposed. Homogeneous nanoparticle precipitation in the bulk of the polymer, due to encapsulation of the iron precursor in the polymer matrix, is accounted for the good preservation of the structures. This study represents the first step towards the use of electrohydrodynamic destabilization for nanostructuring of hematite thin films, with a control over the feature size. (C) 2014 Elsevier B.V. All rights reserved.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
UniBasel Contributors:Constable, Edwin Charles
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:0169-4332
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:03 May 2017 13:38
Deposited On:06 Mar 2015 07:44

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