Hole transparent and hole blocking transport in single-crystal-like organic heterojunction: when rods hold up disks.

Single-crystal-like organic heterojuntions are fabricated with disk-like molecules and different rodlike molecules. Hole transparent and blocking transport are demonstrated with photoemission spectroscopy and field-effect transistors. These results demonstrate a route to utilize adjustable interfacial electronic structure and control transport behavior in developing functional organic crystalline devices and crystalline nanocircuits.