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http://dx.doi.org/10.7317/pk.2012.36.5.599

Study on the Improvement of Physicochemical Properties of PEDOT-Metal Oxide Composite Thin Film by Vapor Phase Polymerization  

Nam, Mi-Rae (Division of Advanced Materials Engineering, Kongju National University)
Yim, Jin-Heong (Division of Advanced Materials Engineering, Kongju National University)
Publication Information
Polymer(Korea) / v.36, no.5, 2012 , pp. 599-605 More about this Journal
Abstract
The physicochemical properties such as surface hardness, solvent mechanical wear resistance, and resistance to scratch properties of poly(3,4-ethylenedioxythiophene) (PEDOT) thin film prepared by vapor phase polymerization (VPP) was effectively improved by post-treatment of various metal alkoxide sol solutions. Metal oxide layer derived from sol-gel process of metal alkoxide was generated on the PEDOT thin film layer by VPP, resulting in improving mechanical properties of the conductive thin films without any deterioration of their original surface resistance. Several kinds of silicone and titanium alkoxide derivatives with various functional groups were used as metal alkoxide sol sources. Among them, PEDOT-metal oxide composite thin film derived tetraethyl orthosilicate showed the best performance in the terms of surface resistance, transmittance, and various physicochemical properties. The effect of metal alkoxide content in washing solution, oxidant content and drying temperature have been investigated in order to optimize the various properties of PEDOT-metal oxide composite thin film.
Keywords
PEDOT; vapor phase polymerization; sol-gel process; metal oxide; composite thin film;
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