6533b852fe1ef96bd12ab6aa

RESEARCH PRODUCT

Application of electrochemical impedance for characterising arrays of Bi2S3 nanowires

Donats ErtsJustin D. HolmesJustin D. HolmesJustin Manjaly VargheseJ KatkevicsArturs ViksnaZanda GertnereGunta Kunakova

subject

Materials scienceGeneral Chemical EngineeringNanowirechemistry.chemical_elementNanotechnologyGrowthElectrical characterizationBismuthchemistry.chemical_compoundElectrochemical Impedance SpectroscopyFabricationElectrodepositionElectrochemistryPorosityElectrical impedanceBismuth sulphideMetalTemplateConductive atomic force microscopyOxide nanowireDielectric spectroscopyNanostructuresNanowireMembranechemistryAluminium oxideAnodic aluminium oxide

description

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.

yearjournalcountryeditionlanguage
2015-07-10
10.1016/j.electacta.2015.04.021https://hdl.handle.net/10468/2224