| 초록 |
Understanding of charge transport at the interface of metal/organic molecules is of great importance for the advancement of molecular electronics. Critical factors that determine conductivity at the interface include the nature of metal-molecule contacts and the electronic structure of the molecular backbone as well as the type of metal. We have synthesized conjugated molecules and formed self-assembled monolayers (SAMs). The SAMs were extensively characterized by ellipsometry, X-ray photoelectron spectroscopy (XPS), and reflection-absorption infrared spectroscopy (RAIRS). Their electrical properties were investigated using conducting probe atomic force microscopy (CP-AFM) technique. Nanoscopic molecular junctions were formed by contacting metal-coated AFM tips to SAMs of the molecules on metal substrates. In this talk, charge transport mechanisms and length dependence of molecular backbone structure will be presented. |
