Enhanced mobility in P3HT-based OTFTs upon blending with a phenylene–thiophene–thiophene–phenylene small molecule

Abstract

An enhancement in charge transport capacity in a poly(3-hexylthiophene) (P3HT) semicrystalline film, up to field-effect mobilities approaching 0.1 cm² V⁻¹ s⁻¹, has been achieved by co-deposition with a small molecule, i.e.5,5′-bis(4-n-hexylphenyl)-2,2′-bithiophene (dH-PTTP), forming highly ordered crystals bridging large polymeric domains.