High-mobility polymer thin-film transistors fabricated by solvent-assisted drop-casting

A solvent-assisted drop-casting technique is introduced for the active layer formation in fabricating polymer thin-film transistors (TFTs). This method allows one to lower the rate of film formation (or deposition) of polymer semiconductor and to use a higher temperature, both factors contributing to better ordering of the semiconducting polymer. A notable increase in mobility results when the technique is applied to fabricating the polymer TFT. More important is the stability of the device that the method provides.