INFLUENCE OF ELECTROPOLYMERIZATION METHOD ON MORPHOLOGIES AND CAPACITIVE PROPERTIES OF POLYPYRROLE FILMS GROWING ON SILICON

Imene Chikouche (), Ali Sahari and Ahmed Zouaoui
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Imene Chikouche: Laboratoire de Croissance et Caracterisation de Nouveaux Semi-Conducteurs, Departement de Genie des Procedes, Faculte de Technologie, University of Ferhat Abbas Setif 1, Setif 19000, Algeria
Ali Sahari: Laboratoire de Croissance et Caracterisation de Nouveaux Semi-Conducteurs, Departement de Genie des Procedes, Faculte de Technologie, University of Ferhat Abbas Setif 1, Setif 19000, Algeria
Ahmed Zouaoui: Laboratoire de Croissance et Caracterisation de Nouveaux Semi-Conducteurs, Departement de Genie des Procedes, Faculte de Technologie, University of Ferhat Abbas Setif 1, Setif 19000, Algeria

Surface Review and Letters (SRL), 2014, vol. 21, issue 06, 1-8

Abstract: Two methods of Pyrrole electropolymerization were investigated to prepare polypyrrole films growing onto n-doped silicon n-Si(111): Polypyrrole films prepared by galvanostatic method exhibits toroidal morphology for thin films, and mixture of toroidal and globular morphologies for thick films. Polypyrrole films obtained from this method were characterized by lower surface roughness. Electropolymerization of pyrrole by potentiodynamic method provided Polypyrrole films with beans-like structures for both thin and thick films with high surface roughness. Due to their lower surface roughness, polypyrrole films produced by galvanostatic method exhibit high intensities in Raman spectroscopy. These polypyrrole films show better capacitive properties according to discharge test.

Keywords: Polypyrrole; electrochemical techniques; growth; galvanostatic; potentiodynamic (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1142/S0218625X14500826

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