Patent ID: 9385333
Filing Date: 2016-07-05
CPC Classification: H01L

Claim Text:
1. A process for producing a thin film field-effect transistor comprising: providing a gate electrode, providing a gate insulating film on the gate electrode, providing a source electrode and a drain electrode on the gate insulating film with a prescribed distance, treating entire surfaces of the source electrode and the drain electrode with a mixture of sulfuric acid and hydrogen peroxide after providing the source electrode and the drain electrode and before providing an organic electronic material layer, and providing the organic electronic material layer containing an organic electronic material on the gate insulating film to be in electrical contact with the source electrode and the drain electrode, wherein a reaction product of the organic electronic material, sulfuric acid and hydrogen peroxide containing a sulfonated product of the organic electronic material is present only at an interface between the source electrode and the organic electronic material layer and an interface between the drain electrode and the organic electronic material layer to thereby increase the electroconductivity of the organic electronic material and reduce a charge injection barrier from the source electrode to the organic electronic material.