Disclosed are formulations that contain an organic semiconducting compound, a hydrophobic surfactant containing a head group that is a chlorosilane, silazane or thiol group and a tail group that is an alkyl, fluoroalkyl or siloxane group, and a non-alcoholic organic solvent, and their uses in electrically conducting, photoconducting and semiconducting components and devices, for example, in integrated circuitry, organic field effect transistors, thin film transistors, organic photovoltaic devices, radio frequency identification tags and organic light emitting diodes.