Electrical properties of plasma-polymerized thin films

Abstract

Thin organic polymer films were prepared by plasma polymerization in the heated system. The films obtained were very smooth and free of pinholes. The electrical conductivities ranged from 10−6 to 10−7 S cm−1 and the Al/Polymer/Au cells with polymers produced from fumaronitrile and p-aminobenzonitrile showed rectifying effect. Both IR observations and electrical measurements confirmed that the conjugated double bonds formed by plasma polymerization in the heated system were responsible for high electrical conductivity. The plot of logσ vs. 1/T gave straight line and 0.29 eV of the activation energy was determined for fumaronitrile polymer. © 1986 The Society of Polymer Science, Japan.