Systematic improvement in charge carrier mobility of air stable triarylamine copolymers.

Zhang W, Smith J, Hamilton R, Heeney M, Kirkpatrick J, Song K, Watkins SE, Anthopoulos T, McCulloch I

The electrical performance of organic semiconducting polymers in field-effect transistor devices is now sufficient for initial low complexity circuit applications. To achieve high performance, either operation in an inert atmosphere or a hydrophobic surface treatment and annealing step is typically required. In this communication we report a strategy to prepare fully air stable, amorphous semiconducting polymers which can achieve charge carrier mobilities in the range of 0.04 cm(2)/(V s), remaining over a period of over 3 months in ambient conditions.