A Review of the Performance and Properties of Conductive Polymers with a Focus on PEDOT:PSS

Document Type : compile

Authors

IPPI

10.22063/basparesh.2025.35691.1737

Abstract

Conductive polymers, recognized as the fourth generation of polymeric materials, possess outstanding electrical properties and charge transport capabilities, granting them a unique position in both scientific research and industrial applications. Although these polymers generally exhibit lower electrical conductivity compared to metals, doping significantly enhances their conductivity. The electrical conduction in these polymers primarily originates from the conjugated π-bond structures along the polymer backbone, which facilitate electron delocalization and charge carrier mobility. Among various conductive polymers, poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) stands out due to its aqueous dispersibility, ability to form uniform and stable films, and remarkable mechanical robustness. These attributes provide PEDOT:PSS with superior performance and notable environmental stability, making it an optimal choice for applications demanding long-term electrical stability and mechanical flexibility. This review highlights the charge transport mechanisms, synthesis strategies, and the role of doping in enhancing the properties of PEDOT:PSS. The analysis of reported data demonstrates that this polymer exhibits higher conductivity compared to other conductive polymers, even in ultrathin films, and retains its conductivity under fluctuating environmental conditions. The synergistic combination of superior electrical characteristics, chemical stability, and structural adaptability establishes PEDOT:PSS as a leading and indispensable conductive polymer for advancing next-generation electronic technologies and flexible materials.

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Basparesh

Articles in Press, Accepted Manuscript
Available Online from 20 July 2026

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