Abstract
The influence of one organic monolayer (30 Å thick) on the electronic conduction through Al/Al 2O 3/Al structures at very high d.c. electric fields ( E > 10 6 V cm −1) between 20 and 120°C was studied. One interposed monolayer reduces the injected current from aluminium into alumina by a factor of 100–1000. This reduction in the conduction current cannot be explained by one single potential barrier associated with the organic layer. It is necessary to take into account the presence of a natural oxide layer on the counterelectrode and the trapping of electrons in the organic layer or at the interface.
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