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arXiv · 1903.07954

Metal to insulator transition in Conducting Polyaniline/Graphene Oxide composites

Eleni Neti·Elias Sakellis·Anthony N. Papathanassiou·Evangelos Vitoratos·Sotirios Sakkopoulos
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Abstract

Broadband Dielectric Spectroscopy (BDS) measurements of Pοlyaniline/Graphene oxide composites were conducted for an as-prepared and a thermally annealed specimen, respectively, from 15K to room temperature. Electrical conductivity values of the annealed composite display a very modest rise denoting the important contributions of the GO component to achieving electrical stability of the polymer. Patterns of the dc conductivity as a function of temperature also reveal a metal to insulator transition around 75K. The transition is dominated by two key factors; temperature and annealing process. Metal-like and insulating features are subsequently detected, as well, and accordingly described to provide a qualitative inspection of the charge transfer mechanisms involved

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Eleni Neti, Elias Sakellis, Anthony N. Papathanassiou, Evangelos Vitoratos, Sotirios Sakkopoulos. 2019-04-12. Metal to insulator transition in Conducting Polyaniline/Graphene Oxide composites. https://doi.org/10.1063/1.5089814

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