1. An electronic circuit comprising a first organic thin film transistor and a second organic thin film transistor which are operatively connected and provided on a common substrate, wherein each of said first organic thin film transistor and said second organic thin film transistor includes bottom source/drain electrodes having an organic semiconductor formed over said bottom source/drain electrodes, wherein each of said bottom source/drain electrodes has a self-assembled monolayer formed thereon, said self-assembled monolayer comprising at least one organic compound which is a thiol or mixture of thiols, and wherein said first organic thin film transistor and said second organic thin film transistor exhibit ambipolar transport such that one of said first and second transistors is configured as a pmos transistor and the other one of said first and second transistors is configured as an nmos transistor.