Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 33, 2018
Previous Article Next Article

Electrical characteristics of heterogeneous polymer layers in PEDOT:PSS films

Author affiliations

Abstract

(3,4-Ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), a representative conducting polymer, is environment-friendly and offers easy processing and flexibility owing to its hydro-dispersive properties. In this study, we investigated the electrical properties of PEDOT:PSS films with H2SO4/DMSO post-treatment. PEDOT:PSS is an electrolyte complex that has been attracting attention as a next-generation transparent electrode. The PEDOT:PSS films are composed of two heterogeneous phases: a PSS-rich layer and a PEDOT-rich layer. The PSS-rich layer is observed to be a homogeneous phase that does not influence the electrical properties. Thus, the PSS-rich layer, which occupies a large area of the PEDOT:PSS films, was removed to obtain films having high electrical properties. Both the layers exhibit a homogeneous phase regardless of their electrical properties. In particular, the PSS-rich layer without the PEDOT chains does not affect the electrical properties, since it does not contribute to hole transport. The heterogeneity of the PEDOT:PSS films with good electrical properties has been revealed by eliminating the unnecessary PSS-rich layers. The highest electrical conductivity obtained was 2239 S cm−1, which is about 4.1 times higher than that of the pristine PEDOT:PSS films, for the films involving 15 M H2SO4/DMSO post-treatment.

Graphical abstract: Electrical characteristics of heterogeneous polymer layers in PEDOT:PSS films

Back to tab navigation

Publication details

The article was received on 28 May 2018, accepted on 13 Jul 2018 and first published on 18 Jul 2018


Article type: Paper
DOI: 10.1039/C8TC02598C
Citation: J. Mater. Chem. C, 2018,6, 8906-8913

  •   Request permissions

    Electrical characteristics of heterogeneous polymer layers in PEDOT:PSS films

    Y. Kim, W. Cho, Y. Kim, H. Cho and J. H. Kim, J. Mater. Chem. C, 2018, 6, 8906
    DOI: 10.1039/C8TC02598C

Search articles by author

Spotlight

Advertisements