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Molecular Orientation and Femtosecond Charge Transfer Dynamics in Transparent and Conductive Electrodes Based on Graphene Oxide and PEDOT:PSS Composites

Abstract

The conducting polymer, poly (3,4-ethylenedioxythiophene)-polystyrene sulfonic acid (PEDOT:PSS), is indeed one of the most important materials for indium tin oxide substitute in organic devices. Its metallic conductivity and transmittance are promising for organic photovoltaic applications. In contrast, Graphene oxide (GO) is not a good conductor but can form good thin films and can be transparent, also GO is not expensive and can be easily synthesized. In this work we investigated how the conductivity of a composite film of graphene oxide (GO) and different amount of PEDOT:PSS can be modified. The effect of GO:PEDOT:PSS composites with several PEDOT:PSS proportions is analyzed regarding the composite molecular structure and ordering, charge transfer dynamics (in the femtosecond range), electrical properties and morphology. For our best conductivity ratio GO with 5% PEDOT:PSS we also perform a solvent treatment, comparing the resistivity of the film when treated with Dimethyl Sulfoxide (DMSO) and with Ethylene Glycol.

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Publication details

The article was received on 23 Aug 2018, accepted on 03 Dec 2018 and first published on 04 Dec 2018


Article type: Paper
DOI: 10.1039/C8CP05382K
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
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    Molecular Orientation and Femtosecond Charge Transfer Dynamics in Transparent and Conductive Electrodes Based on Graphene Oxide and PEDOT:PSS Composites

    B. G. Alves Leite Borges, S. Holakoei, M. F. Fagundes Neves, L. C. Wouk de Menezes, C. F. de Matos, A. J.G. Zarbin, L. S. Roman and M. L. Rocco, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C8CP05382K

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