Patent ID: 8258504

Claim:
An organic field effect transistor comprising: drain and source electrodes, a semiconductor layer made of an organic semiconductor material arranged between the drain and source electrodes, at least one gate electrode capable of creating an electric field which increases a density of mobile charge carriers in the semiconductor layer in order to create a conduction channel in the semiconductor layer between the drain and source electrodes when a voltage V G is applied to the gate electrode, thus making it possible to switch the organic field effect transistor from an “off” state to an “on” state, and an electrically insulating layer interposed between the gate electrode and the semiconductor layer with the insulating layer being directly in contact with the semiconductor layer, wherein the semiconductor layer closest to the gate electrode comprises a first portion which has a mobility μ sup greater than a mobility μ inf of a second portion of the semiconductor layer located closest to the source and drain electrodes, the second portion being interposed between the first portion and the source and drain electrodes.