Field-effect transistors based on macroscopically oriented polymers with high saturation mobility

摘要

Methods and materials for preparing organic semiconducting layers include, for example, one used in an organic semiconductor device including a substrate with a nano structured surface and an organic semiconductor film overlying the nanostructured surface. The semiconductor film is typically formed from macroscopically ordered polymer fibers made from selected conjugate polymer compounds. Such polymer fibers synthesized from selected conjugated polymer compounds and directionally aligned in organic semiconductor devices can provide these devices improved functional properties, including for example, unexpectedly high field effect saturation mobilities.

主权项

1. A composition of matter comprising a bundle of polymer fibers, wherein:
(a) the polymer fibers are formed from conjugated polymers comprising a plurality donor and acceptor units; (b) the conjugated polymers are disposed in the fibers such that longitudinal axes of the conjugated polymers within the polymer fibers are substantially aligned along longitudinal axes of the polymer fibers; (c) a plurality of the polymer fibers in the bundle are disposed in a non random orientation such that the plurality of polymer fibers are directionally aligned; and (d) the plurality of directionally aligned polymer fibers are adapted to transport charge between source and drain electrodes in a field effect transistor such that the field effect saturation mobility of the plurality of directionally aligned polymer fibers in the field effect transistor is at least 10 cm2/Vs.