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Optical investigations of the effect of solvent and thermal annealing on the optoelectronic properties of Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) films

Laskarakis, A., Karagiannidis, Panagiotis, Georgiou, D., Nikolaidou, D.M. and Logothetidis, S. (2013) Optical investigations of the effect of solvent and thermal annealing on the optoelectronic properties of Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) films. Thin Solid Films, 541. pp. 102-106. ISSN 00406090

Item Type: Article

Abstract

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is one of the most promising conducting polymers that can be used as transparent electrode or as buffer layer for organic electronic devices. However, when used as an electrode, its conductivity has to be optimized either by the addition of solvents or by post-deposition processing. In this work, we investigate the effect of the addition of the polar solvent dimethylsulfoxide (DMSO) to an aqueous PEDOT:PSS solution on its optical and electrical properties by the implementation of the Drude model for the analysis of the measured pseudo-dielectric function by Spectroscopic Ellipsometry from the near infrared to the visible–far ultraviolet spectral range. The results show that the addition of DMSO increases significantly the film conductivity, which reaches a maximum value at an optimum DMSO concentration as it has confirmed by experimentally measured conductivity values. The post-deposition thermal annealing has been found to have a smaller effect on the film conductivity.

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More Information

Depositing User: Panagiotis Karagiannidis

Identifiers

Item ID: 7760
Identification Number: https://doi.org/10.1016/j.tsf.2013.03.138
ISSN: 00406090
URI: http://sure.sunderland.ac.uk/id/eprint/7760
Official URL: https://doi.org/10.1016/j.tsf.2013.03.138

Users with ORCIDS

ORCID for Panagiotis Karagiannidis: ORCID iD orcid.org/0000-0002-2709-4161

Catalogue record

Date Deposited: 22 Sep 2017 14:17
Last Modified: 18 Dec 2019 15:41

Contributors

Author: Panagiotis Karagiannidis ORCID iD
Author: A. Laskarakis
Author: D. Georgiou
Author: D.M. Nikolaidou
Author: S. Logothetidis

University Divisions

Faculty of Technology
Faculty of Technology > School of Engineering

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