Conductivity of PEDOT:PSS on spin-coated and drop cast nanofibrillar cellulose thin films

Dimitar Valtakari, Jun Liu, Vinay Kumar, Chunlin Xu, Martti Toivakka, Jarkko Saarinen

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Aqueous dispersion of conductive polymer poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT:PSS) was deposited on spin-coated and drop cast nanofibrillar cellulose (NFC)–glycerol (G) matrix on a glass substrate. A thin glycerol film was utilized on plasma-treated glass substrate to provide adequate adhesion for the NFC-glycerol (NFC-G) film. The effects of annealing temperature, the coating method of NFC-G, and the coating time intervals on the electrical performance of the PEDOT:PSS were characterized. PEDOT:PSS on drop cast NFC-G resulted in 3 orders of magnitude increase in the electrical conductivity compared to reference PEDOT:PSS film on a reference glass substrate, whereas the optical transmission was only slightly decreased. The results point out the importance of the interaction between the PEDOT:PSS and the NFC-G for the electrical and barrier properties for thin film electronics applications.
Original languageUndefined/Unknown
Pages (from-to)
JournalNanoscale Research Letters
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed


  • Nanofibrillated cellulose
  • Conductivity
  • Thin films

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