ABSTRACT
Molecular electronics has generated a tremendous wave of scientific interest in the past decade due to prospects of device-size reduction offered by atomic-level control of certain physical properties [1]. In addition to the fabrication of electronic device by traditional silicon technology, crossing molecules between electrodes provides an alternative method to build nanoscale electronic device. The concern with metal-molecule-metal tunnel junctions has been growing due to their potential applications in nanoscale devices. This idea inspires a new form of electronics at atomic level, which attracts much interest from multi-discipline researchers, nourishing the hope to trigger technology revolution in the
electronic industry. This goal is important because the consumer electronics can be more compact in size, more efficient in energy saving, and more stable in functioning due to less heat generation. It has spurred great interest in the fundamental understanding of quantum transport [2]. The path to extreme device miniaturization resulted in the rapid development of molecular electronics, where molecules are used as building blocks to form nanodevices. Molecular electronics offers bottom-up method taking advantage of molecular self-assembly in addition to the traditional silicon technology, which reduces the size of electronics from top-down approach. Molecular electronics with merit to the small size has struggled for the forefront of electronic devices.
