Influence of imidazole-based acidity control of PEDOT:PSS on its electrical properties and environmental stability

Ahra Cho, Seyul Kim, Soyeon Kim, Wonseok Cho, Chanil Park, Felix Sunjoo Kim, Jung-Hyun Kim

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been studied for a wide range of applications due to its potential as a transparent electrode. Herein, the use of imidazole and its derivatives as a neutralizing additive for PEDOT:PSS dispersion and in-depth studies of their effects in terms of electrical properties and stability is reported. Although the neutralization in general reduces the electrical conductivity of PEDOT:PSS, the conductivity after imidazole treatment (685.2 S cm −1 ) is higher than that after treatment of other derivatives. Spectroscopic and thermoelectric studies show that the de-doping effect resulted in the conductivity reduction. As a trade-off of the conductivity reduction, greatly enhanced long-term stability and noncorrosive characteristics are obtained after neutralization. The change in sheet resistance of imidazole-treated PEDOT:PSS after 500 h under harsh conditions (85 °C and 85% humidity) is half that of the untreated samples, demonstrating the great enhancement of the stability.

Original languageEnglish
Pages (from-to)1530-1536
Number of pages7
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume54
Issue number15
DOIs
Publication statusPublished - 2016 Aug 1

Fingerprint

imidazoles
Acidity
acidity
Electric properties
electrical properties
conductivity
Derivatives
Sheet resistance
humidity
Atmospheric humidity
Doping (additives)
Electrodes
electrical resistivity
electrodes
augmentation
poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)
imidazole

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Cho, Ahra ; Kim, Seyul ; Kim, Soyeon ; Cho, Wonseok ; Park, Chanil ; Kim, Felix Sunjoo ; Kim, Jung-Hyun. / Influence of imidazole-based acidity control of PEDOT:PSS on its electrical properties and environmental stability. In: Journal of Polymer Science, Part B: Polymer Physics. 2016 ; Vol. 54, No. 15. pp. 1530-1536.
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Influence of imidazole-based acidity control of PEDOT:PSS on its electrical properties and environmental stability. / Cho, Ahra; Kim, Seyul; Kim, Soyeon; Cho, Wonseok; Park, Chanil; Kim, Felix Sunjoo; Kim, Jung-Hyun.

In: Journal of Polymer Science, Part B: Polymer Physics, Vol. 54, No. 15, 01.08.2016, p. 1530-1536.

Research output: Contribution to journalArticle

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