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Redox-active charge carriers of conducting polymers as a tuner of conductivity and its potential window.

ABSTRACT: Electric conductivity of conducting polymers has been steadily enhanced towards a level worthy of being called its alias, "synthetic metal". PEDOT:PSS (poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate)), as a representative conducting polymer, recently reached around 3,000 S cm(-1), the value to open the possibility to replace transparent conductive oxides. The leading strategy to drive the conductivity increase is solvent annealing in which aqueous solution of PEDOT:PSS is treated with an assistant solvent such as DMSO (dimethyl sulfoxide). In addition to the conductivity enhancement, we found that the potential range in which PEDOT:PSS is conductive is tuned wider into a negative potential direction by the DMSO-annealing. Also, the increase in a redox-active fraction of charge carriers is proposed to be responsible for the enhancement of conductivity in the solvent annealing process.

SUBMITTER: Park HS

PROVIDER: S-EPMC3744797 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Redox-active charge carriers of conducting polymers as a tuner of conductivity and its potential window.

Park Han-Saem HS Ko Seo-Jin SJ Park Jeong-Seok JS Kim Jin Young JY Song Hyun-Kon HK

Scientific reports 20130101

Electric conductivity of conducting polymers has been steadily enhanced towards a level worthy of being called its alias, "synthetic metal". PEDOT:PSS (poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate)), as a representative conducting polymer, recently reached around 3,000 S cm(-1), the value to open the possibility to replace transparent conductive oxides. The leading strategy to drive the conductivity increase is solvent annealing in which aqueous solution of PEDOT:PSS is tre ...[more]

PMID: 23949091

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