Highly conductive PEDOT:PSS nanofibrils induced by solution-processed crystallization

Nara Kim, Seyoung Kee, Seoung Ho Lee, Byoung Hoon Lee, Yung Ho Kahng, Yong Ryun Jo, Bong Joong Kim, Kwanghee Lee

Research output: Contribution to journalArticlepeer-review

687 Scopus citations

Abstract

Crystalline poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) nanofibrils with an electrical conductivity of 4380 S cm -1 are formed via a solution process using H2SO 4. The concentrated H2SO4 treatment induces a significant structural rearrangement of the PEDOT:PSS via a charge-separated transition mechanism, resulting in highly ordered and densely packed PEDOT:PSS nanofibrils. The PEDOT:PSS electrode shows a sheet resistance of 46 Ω sq-1 with 90% optical transmittance.

Original languageEnglish
Pages (from-to)2268-2272
Number of pages5
JournalAdvanced Materials
Volume26
Issue number14
DOIs
StatePublished - 9 Apr 2014

Keywords

  • nanofibrils
  • organic electronics
  • PEDOT:PSS
  • solution-processed crystallization
  • transparent electrodes

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