Field-effect transistors based on self-organized molecular nanostripes.

摘要: Charge transport properties in organic semiconductors depend strongly on molecular order. Here we demonstrate field-effect transistors where drain current flows through a precisely defined array of nanostripes made crystalline and highly ordered molecules. The stripes are fabricated across the channel transistor by stamp-assisted deposition from solution. As solvent evaporates, capillary forces drive solution to form menisci under stamp protrusions. solute precipitates only regions is confined once critical concentration reached self-organizes into molecularly 100-200 nm wide few monolayers high. charge mobility measured along 2 orders magnitude larger than values for spin-coated thin films.