Electronic structure and properties of highly ordered C60 nano arrays on Au (111): STM & DFT study

33rd International Conference on the Physics of Semiconductors

Win, Zaw-Myo^1 ; Huang, Chao^1 ; Zhang, Rui-Qin^1

Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong^1

关键词: C60 molecules;    Geometrical shapes;    Miniature devices;    Photovoltaic devices;    Single-molecule transistor;    Strong interaction;    Structural buildings;    Structure and properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/864/1/012076/pdf
DOI  :  10.1088/1742-6596/864/1/012076

来源: IOP

【 摘 要 】

Template assisted assembly of molecular nano arrays is one of the key steps towards molecular electronics and fullerene is one of the potential structural building blocks in fabrication of identical molecular nano arrays for miniature devices such as photovoltaic devices and single-molecule transistors. In this report, the reconstructed Au (111) with defect areas (steps) has been used as a template to assemble the highly ordered C60nano array at low coverage studied with scanning tunnelling microscopy (STM) in conjunction with density functional theory (DFT). The interaction between the substrate and C60nano arrays is strong enough to change the geometrical shape of C60. As a result of strong interaction, the C60molecule appears to be deformed into ellipsoidal shape which causes the reduction of C60nano arrays on step sites of Au (111).