Rectifying metal-polymer contacts formed by melt processing

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Abstract
Rectifying contacts between aluminum, indium, or titanium and a solution and melt processable conducting polymer, poly(3-octylthiophene) have been formed by melt processing. The contacts are formed by heating a metal/polymer/metal structure to the melting point of the polymer and then pressing the metals to the melted polymer until adhesion is achieved, whereupon the whole structure is cooled to room temperature. Comparison of the current-voltage and capacitance-voltage characteristics of a melt processed device and a device manufactured by metal sputtering shows that no significant differences exist between these structures.