Redox Switching in Conjugated Polymer Thin Films

Redox Switching in Conjugated Polymer Thin Films [Pg.64]

In this section we examine the mechanism of potential induced redox switching in electronically conducting polymer Aims. The term redox switching refers to the transition from an electronically insulating to an [Pg.64]

FIGURE 1.26. (a) Schematic representation of the oxidized site distribution in an electronically conducting polymer film according to the Aoki phase propagation model, (b) Conductive front propagation modeled as a random distribution of oxidized chains with each chain starting from a random location on the support electrode surface, (c) An assembly of conductive one-dimensional pillar fibrils of various lengths. [Pg.65]

FIGURE 1.27. Schematic representation of conductive cylinders. Shaded regions are conductive unshaded regions are insulating. Both intramolecular and intermolecular interfaces are illustrated. [Pg.67]

Let a and b denote concentrations of reduced and oxidized species present in the film and at any time t the total site concentration Cx = a + b, whereas at time t = 0, b = 0 and Cx - a. Now charge transfer across the conducting/nonconducting boimdary is given by the Butler-Volmer expression [Pg.67]

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