Fabrication and Optical Characteristics of Electrodeposited Conducting Polymer Thin Film Based on Poly(p-phenylene vinylene) Derivative

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Abstract
Ultrathin films based on a poly(p-phenylene vinylene) derivative were fabricated successfully by an electrodeposition method. A luminescent polyanion, poly(1,4-(2-(5-carboxypentyloxy)-5-methoxyphenylene)vinylene) (CPMOPPV) was adsorbed onto substrates with an electrode under an applied electrical potential. The film thickness was controlled by adjusting the deposition time, the applied working potential or the CPMOPPV concentration in ethanol solution. The thin film could be formed onto even a semiconducting polymer film or an insulator polymer film, as well as onto a metal electrode. The optical properties of the electrodeposited thin films were also studied. Electroluminescent (EL) devices with the single-layered structure of CPMOPPV were fabricated and strong yellow EL was observed.