Patent ID: 7910736

Claim:
A method for producing an organic field-effect transistor, comprising the steps of: a) providing a substrate comprising a gate structure, a source electrode and a drain electrode located on the substrate, and b) applying an n-type organic semiconducting compound to the area of the substrate where the gate structure, the source electrode and the drain electrode are located, wherein the n-type organic semiconducting compound is selected from compounds of the formula I wherein R 1 , R 2 , R 3 and R 4 are independently hydrogen, chlorine or bromine, with the proviso that at least one of these radicals is not hydrogen, Y 1 is NR a , wherein R a is hydrogen, Y 2 is NR b , wherein R b is hydrogen, and Z 1 , Z 2 , Z 3 and Z 4 are O.