Study of Electrical Conduction and Transient Currents of Pure and Malachite Green Doped Polyvinyl Carbazole Samples

Studies on time dependent polarization effects along with electrical conduction and transient charging and discharging currents were investigated in organic polymers. Accumulation of charge carriers near the electrodes or trapping in the bulk may be the basic reason of polarization of polymeric materials and dipolar orientations. Under certain conditions space charge polarization may also be contributed by additional charge carriers provided by injection from the electrodes. It has been observed experimentally that space charge relaxations and dipolar reorientation are dominant mechanisms for the observed current transients. The discharging currents are observed to be consistent with Curie-Von Schweildler Law characteristics with different slopes in short and long time regions. This further confirms that the P-F mechanism is the operative conduction mechanism.