Solution-grown unidirectionally oriented crystalline thin films of a U-shaped thienoacene-based semiconductor for high-performance organic field-effect transistors

We propose a new design strategy for high-performance organic semiconductors, wherein we utilize 2,10-dioctyl-bis(benzo[4,5]thieno)[2,3-b:3′,2′-d]thiophene, having an overall U-shaped configuration, for preferable self-organization into bilayer lamellar assemblies. Hole mobilities as high as 3.8 cm² V^-1 s^-1 and large anisotropic conduction can be attained in organic field-effect transistors incorporating its dip-coated crystalline thin films.