Electronic conduction in electropolymerized carbazole thin films
R Clergereaux; I Séguy; P Jolinat; J Farenc; P Destruel; R Clergereaux; Laboratoire de Génie Electrique de Toulouse, ESA 5003, 118 route de Narbonne, F 31062 Toulouse Cedex 4, France; I Séguy; Laboratoire de Génie Electrique de Toulouse, ESA 5003, 118 route de Narbonne, F 31062 Toulouse Cedex 4, France; P Jolinat; Laboratoire de Génie Electrique de Toulouse, ESA 5003, 118 route de Narbonne, F 31062 Toulouse Cedex 4, France; J Farenc; Laboratoire de Génie Electrique de Toulouse, ESA 5003, 118 route de Narbonne, F 31062 Toulouse Cedex 4, France; P Destruel; Laboratoire de Génie Electrique de Toulouse, ESA 5003, 118 route de Narbonne, F 31062 Toulouse Cedex 4, France
Журнал:
Journal of Physics D: Applied Physics
Дата:
2000-08-21
Аннотация:
The electronic conduction mechanism in polycarbazole (PCz) films was investigated. Electropolymerization was used to fabricate PCz thin films. The current density versus the electric field J(E) indicated an ionic polarization. Ions were (1) quenched by the effect of a high hydrostatic pressure or (2) eliminated by dipping PCz in de-ionized water. The electronic conduction was characterized by J(E) measurements at different temperatures and by impedance spectroscopy, and was modelled as a Schottky-type injection. A comparison of the results obtained following treatments 1 and 2 indicated a large difference in the model parameters. This disparity was interpreted in terms of differences in the effective mass due to interface modification.
129.3Кб