High anisotropic conductivity in organic insulator/semiconductor monolayer heterostructure

Abstract

We demonstrate a highly anisotropic conductivity, with a 109 ratio, between the in-plane and perpendicular electrical transport in organic insulator/semiconductor heterostructures of monolayer thickness. These heterostructures are self-assembled monolayers made of alkyl chains and functionalized by various conjugated moieties at their ends. The high anisotropic conductivity is due to the close packing of the conjugated end groups. These structures might be the building blocks of molecular-scale devices. © 2000 American Institute of Physics.