In generally, the films of aqueous PEDOT: PSS dispersions show a drastic reduction in the sheet resistance stability of the film due to oxidation. Here we report the solvent exchange technique of PEDOT: PSS dispersion from water to EG (ethylene glycol) solvent through ultrafiltration. EG-based PEDOT: PSS dispersion has many advantages which are 1) High electrical conductivity with increasing the contact surface of the each PEDOT grains. 2) Low PSS content in PEDOT:PSS dispersion due to removal of unreacted PSS with PEDOT grains. 3) Highly coating properties on PET film. 4) High weather resistance on sheet resistance. Therefore, an EG-based PEDOT:PSS dispersion can be applied to various fields easily such as an electromagnetic shield and a transparent electrode. As a result, we could fabricate the poly(ethylene terephthalate) (PET) films coated with EG-based PEDOT:PSS and Ag nanowire hybrid. The films were transparent (&gt;90 T%) and showed a low sheet resistivity (&lt;50 Ω/sq.) in a dried state.

Ethylene glycol-based highly conductive PEDOT:PSS dispersion and silver nanowire hybrid film for transparent electrode

2019 Fall National Meeting

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