Application of electrochemical impedance for characterising arrays of Bi2S3 nanowires
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Accepted Version
Date
2015-07-10
Authors
Kunakova, Gunta
Katkevics, Juris
Viksna, Arturs
Gertnere, Zanda
Varghese, Justin M.
Holmes, Justin D.
Erts, Donats
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Published Version
Abstract
Electrochemical Impedance Spectroscopy (EIS) was used to characterise the electrical properties of bismuth sulphide (Bi2S3) nanowires (NWs) templated within anodic aluminium oxide (AAO) membranes. A specially engineered cell, with a nominal electrolyte volume of 0.1–0.2 ml, was used to hold and measure the electrochemical impedance of the fragile NW/AAO samples. An equivalent circuit model was developed to determine the filling density of nanowires within the porous templates. The EIS method can be utilised to probe the nanowire filling density in porous membranes over large sample areas, which is often unobtainable using electron microscopy and conductive atomic force microscopy techniques.
Description
Keywords
Electrochemical Impedance Spectroscopy , Nanowire , Bismuth sulphide , Anodic aluminium oxide , Electrical characterization , Oxide nanowire , Growth , Electrodeposition , Nanostructures , Fabrication , Template , Metal
Citation
KUNAKOVA, G., KATKEVICS, J., VIKSNA, A., GERTNERE, Z., VARGHESE, J., HOLMES, J. D. & ERTS, D. 2015. Application of Electrochemical Impedance for Characterising Arrays of Bi2S3 Nanowires. Electrochimica Acta, 170, 33-38. http://www.sciencedirect.com/science/article/pii/S0013468615008993