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http://dx.doi.org/10.7317/pk.2015.39.3.461

Effect of Imidazole and Surfactant on the Opto-Electrical Properties of PEDOT Thin Films via Vapor Phase Polymerization  

Khadka, Roshan (Division of Advanced Material Engineering, Kongju National University)
Yim, Jin-Heong (Division of Advanced Material Engineering, Kongju National University)
Publication Information
Polymer(Korea) / v.39, no.3, 2015 , pp. 461-467 More about this Journal
Abstract
This paper reports the combined effects of the triblock copolymer surfactant poly(ethylene glycol)-poly(propylene glycol)-poly(ethylene glycol) (PEG-PPG-PEG) and imidazole on the opto-electrical and mechanical properties of poly(3,4-ethylenedioxythiophene) (PEDOT)-based thin films prepared via vapor phase polymerization (VPP) using ferric p-toluenesulfonate as a catalyst. Various PEDOT-based thin films were synthesized using PEG-PPG-PEG and imidazole alone and in combination to compare and correlate their effects on film properties. The improved conductivity of the PEDOT films was higher than $1300S{\cdot}cm^{-1}$ when the surfactant and imidazole were used together. The PEG-PPG-PEG chain length was also varied to identify the best conditions for the VPP-based preparation of PEDOT thin films.
Keywords
PEDOT; conductivity; surfactant; imidazole; opto-electrical properties;
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