Organo‐metal Diodes Based on a Nanoparticulate Poly(3,4‐ethylenedioxythiophene) Composite

Diodes composed of a nanoparticulate composite of poly(3,4-ethylenedioxythiophene) and a Cu-Cu 2+ redox couple in a poly(ethylene oxide)-LiBF 4 polymer-electrolyte matrix between Ag and Zr electrodes show rectifications in excess of 50000 at applied fields of 4 V. These large changes are considered to arise from both rectification at the Zr/ZrO 2 composite interface and from the switching of the composite material between two conductivity states by the application of a low potential field. The preparation and electrochemical characterisation of these novel active devices are discussed.

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