ELECTRONIC-PROPERTIES OF POLYPYRROLE POLYINDENE COMPOSITE METAL JUNCTIONS

Junction properties between conducting polymer composites of polypyrro le/polyindene (PPy/PIn) with different conductivities and metals like Pt, Au, Al and In have been investigated. Rectifying junctions were ob served for low work function metals, In and Al; however, high work fun ction metals, Pt and Au, were observed to form ohmic contacts to PPy/P In composite in the sandwich geometry. The rectifying behavior of the metal/composite/Pt junctions improved when the conductivity of the com posite was decreased from I to 0.01 S/cm. Using the ideal Schottky the ory various junction parameters have been determined. Ail planar junct ions were ohmic regardless of the conductivities of the samples.