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6610318 
Journal Article 
Study on the Thermal Stability of PEDOT/PSS Film Hybrided with Graphene Oxide 
Su, PW; Chung, DW; 최종혁; 이성민 
2016 
27 
4 
402-406 
KJD:ART002132748 
In order to investigate the thermal stability of electro-conductive poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) (PEDOT/PSS), we have prepared films by casting PEDOT/PSS aqueous solution without using a binding material and measured surface resistances of the films while annealing at 200 ℃. Electrical properties of films were improved by annealing, and the maximum conductivity (540 Sm-1) after annealing for 2 hrs was found to be approximately 3 times higher than that (180 Sm-1) of the original film. The conductivities, however, dramatically decreased with an increase in annealing time and dissipated after 24 hrs of annealing. On the other hand, PEDOT/PSS films hybridized with graphene oxide (GO) displayed a salient improvement in conductivity by annealing, which was measured to be around 600 Sm-1 even after 30 hrs of annealing at 200 ℃. We tentatively conclude that hybridization with GO enhances the thermal stability of PEDOT/PSS.