Relaxation currents in conductive organic films

Abstract

Polarization and dcpolarization currents observed at uniform heating and associated with the presence of electrode barriers of a complcx form are studied in organic films. The barrier height can vary materially under the effect of the applied field. This accounts for the difference between the relaxation currents obtained with and without the application of voltage, both in magnitude and in sign. The low-temperature peak of the relaxation current, like the peak of thermostirnulated conductivity. allows to determine the energies of traps in the compounds studied. The hightemperature peak is associated with the electrode barrier.