Morphology and photoluminescence of nanostructured oxides grown by copper passivation in aqueous potassium hydroxide solution

Journal article (2017)

Authors

W.J. Stepniowski Military University of Technology, Micro and Nano Engineering - Mechanical, Maritime and Materials Engineering
Stevan Stojadinović University of Belgrade
Rastko Vasilić University of Belgrade
Nenad Tadić University of Belgrade
Krzysztof Karczewski Military University of Technology
S.T. Abrahami (OLD) MSE-6
J.G. Buijnsters Micro and Nano Engineering - Mechanical, Maritime and Materials Engineering
J.M.C. Mol (OLD) MSE-6
Research Group
Micro and Nano Engineering (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2017 W.J. Stepniowski, Stevan Stojadinović, Rastko Vasilić, Nenad Tadić, Krzysztof Karczewski, S.T. Abrahami, J.G. Buijnsters, J.M.C. Mol
DOI: https://doi.org/10.1016/j.matlet.2017.03.155
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Published Date

2017

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Precision and Microsystems Engineering

Research Group

Micro and Nano Engineering

Abstract

Copper foil was anodized in 1 M KOH at potentials ranging from −400 to −100 mV vs. Ag|AgCl electrode. Cyclic voltammetry showed a distinct peak with a maximum at around −150 mV. For anodizing at −100 and −200 mV, nanowires with diameters of ca. 19 and 24 nm respectively were found to be grown. Moreover, photoluminescence and X-ray diffraction show that the dominant phase is the CuO phase. At lower potentials, cuboidal micron sized crystals were formed and Cu2O was found to be the major phase.

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