• 文献标题:   Specific issues related to the law of corresponding states for the charge transport in molecular junctions based on graphene electrodes
  • 文献类型:   Article, Proceedings Paper
  • 作  者:   BALDEA I
  • 作者关键词:   molecular electronic, interface coupling, graphene electrode, charge transport, electron tunneling, universality out of equilibrium
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   Heidelberg Univ
  • 被引频次:   1
  • DOI:   10.1016/j.apsusc.2018.02.149
  • 出版年:   2019

▎ 摘  要

A recent Science paper in the field of graphene-based molecular electronics reported on fabrication of molecular photoswitches with unprecedented levels of accuracy, reproducibility, and stability. Current-voltage curves measured for diarylethene junctions with graphene electrode were found to agree with a law of corresponding states (LCS) deduced theoretically for the nanotransport via tunneling and validated against a variety of molecular junctions with metallic electrodes. In this work, we discuss a series of specific aspects related to the applicability of this LCS to junctions with graphene electrodes, e.g., what is the physical motivation of the width of the bias range wherein experimental data were found to agree with the aforementioned LCS. The analysis presented in this paper emphasizes the essential role played in nanotransport by interactions at molecule-electrode interfaces as well as the fact that a significant impact of temperature is compatible with a transport mechanism via tunneling; temperature dependence does not necessarily imply a transport mechanism via hopping, contrary to what is often claimed. (C) 2018 Elsevier B.V. All rights reserved.