Intrinsic charge transport of conjugated organic molecules in electromigrated nanogap junctions

Abstract

We present the measurement of charge transport through phenylene conjugated molecules using electromigrated nanogap junctions. To elucidate the intrinsic transport properties of the conjugated molecular junctions, a variety of molecular transport techniques were performed at low temperature, including inelastic electron tunneling spectroscopy, temperature- and length-variable transport measurements, and transition voltage spectroscopy. Such a self-consistent characterization of the molecular junction demonstrates the observation of intrinsic molecular properties in these junctions. (C) 2011 American Institute of Physics. [doi :10.1063/1.3578345]