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Conductivity of PEDOT:PSS on Spin-Coated and Drop Cast Nanofibrillar Cellulose Thin Films
Dimitar Valtakari1, Jun Liu2, Vinay Kumar3
1Laboratory of Paper Coating and Converting, Center for Functional Materials (FunMat), Abo Akademi University, Porthansgatan 3, 20500, Åbo/Turku, Finland. dimitar.valtakari@abo.fi.
Abstract:
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.
