ORGANIC SEMICONDUCTOR HAVING POLYMERIC AND NONPOLYMERIC CONSTITUENTS

A composition, comprising organic polymer molecules, and organic nonpolymeric molecules, wherein the composition is a semiconducting solid. The composition includes a distribution of crystal domains of the polymer molecules and inter-domain regions between the crystal domains, a concentration of polymer molecules being higher in the crystal domains than in the inter-domain regions, and a concentration of nonpolymeric molecules being higher in the inter-domain regions than in the crystal domains.