Quantitative tunneling spectroscopy of nanocrystals

First, Phillip N ; Whetten, Robert L ; Schaaff, T Gregory

关键词: nanocrystals;    graphene;    scanning tunneling microscopy;    tunneling spectroscopy;   

DOI  :  10.2172/1057556
RP-ID  :  Final Report
PID  :  OSTI ID: 1057556

美国|英语

来源: SciTech Connect

【 摘 要 】

The proposed goals of this collaborative work were to systematically characterize the electronic structure and dynamics of 3-dimensional metal and semiconducting nanocrystals using scanning tunneling microscopy/spectroscopy (STM/STS) and ballistic electron emission spectroscopy (BEES). This report describes progress in the spectroscopic work and in the development of methods for creating and characterizing gold nanocrystals. During the grant period, substantial effort also was devoted to the development of epitaxial graphene (EG), a very promising materials system with outstanding potential for nanometer-scale ballistic and coherent devices ("graphene" refers to one atomic layer of graphitic, sp2 -bonded carbon atoms [or more loosely, few layers]). Funding from this DOE grant was critical for the initial development of epitaxial graphene for nanoelectronics