On the influence of p-quinquephenyl doping on some electrical properties of 1,4-cis-polybutadiene

This paper contains results on the electrical conductivity of 1,4-cis-polybutadiene doped with p-quinquephenyl. The aim of these measurements was to study conduction mechanisms. Methods of introducing charge carriers into the bulk of the material and transport properties were taken into consideration. X-ray diffraction measurements were carried out to study the structure of the material as well as the phase transitions. As this work presents only part of our investigations, they are restricted to the results obtained for a layer thickness of d=2.506 μm with aluminium and gold electrodes. Measurements were performed in the temperature range from 16 to 364 K and electric fields up to 109 V/m. 1,4-cis-Polybutadiene consisting of 96% cis- and 4% trans- form was purchased from Philips Petroleum. Quinquephenyl was produced by Tokyo Kasei Kogyo. DC conductivity was controlled by Poole–Frenkel effect. The energy of activation was also determined.