Patent ID: 7553693

Claim:
Method for making a field effect transistor comprising a source and a drain connected by a channel controlled by a gate electrode separated from the channel by a gate insulator, the channel being formed in a diamond-like carbon layer, method successively comprising deposition of said diamond-like carbon layer on a substrate, deposition of an insulating gate layer on the diamond-like carbon layer, deposition, on the insulating gate layer, of at least one conducting layer and etching of the latter so as to form the gate electrode, deposition of an insulating material on flanks of the gate electrode to form a lateral insulator, etching of the gate insulating layer, etching of the diamond-like carbon layer so as to delineate the channel, in said diamond-like carbon layer, deposition, on each side of the channel, of a semi-conducting material designed to form the source and of a semi-conducting material designed to form the drain wherein etching of the diamond-like carbon layer is isotropic so as to obtain a retraction of the diamond-like carbon layer under the gate insulating layer.