Article ID Journal Published Year Pages File Type
1266940 Organic Electronics 2015 6 Pages PDF
Abstract

•A simple 2-Methylimidazole post treatment was applied to enhance the conductivity of PEDOT:PSS films.•Mechanism of conductivity enhancement of PEDOT:PSS films was explained.•Optical properties and surface physics of treated PEDOT:PSS films were investigated.

The electrical conductivity of poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films was significantly improved without losing the optical transparency by treating the films with solution of 2-Methylimidazole in ethanol. The maximum electrical conductivity of such a thin film reached 930 S cm−1, more than 1150 order of magnitude higher than that of pure PEDOT:PSS film. The mechanism of conductivity enhancement of treated thin PEDOT:PSS films was explored by atomic force microscopy (AFM) and UV/VIS spectrophotometer. The AFM scans show that the surface of the 2-Methylimidazole treated PEDOT:PSS layer is smoother than that of the pristine PEDOT:PSS thin film. Improvement in the morphology, electrical and optical properties of PEDOT:PSS films makes them highly suitable for numerous applications in optoelectronic devices.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemistry Chemistry (General)
Authors
, , ,