Lateral epitaxial growth of two-dimensional heterostructure linked by gold adatoms  

作　　者：Nan Si Tao Shen Xinyi Liu Dechun Zhou Qingmin Ji Wei Liu Shuang Li Tianchao Niu 

机构地区：[1]Herbert Gleiter Institute of Nanoscience,School of Material Science and Engineering,Nanjing University of Science and Technology,Nanjing,210094,China [2]Nano and Heterogeneous Materials Center,School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing,210094,China [3]School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai,200240,China

出　　处：《Nano Research》2021年第3期887-892,共6页纳米研究（英文版）

基　　金：This work is financially supported by the Natural Science Foundation of Jiangsu Province(No.BK20181297);the National Natural Science Foundation of China(Nos.21875108,21403282,and 51602155);the Fundamental Research Funds for Central Universities(Nos.30919011257,30917015106,and 30918011340)。

摘　　要：Lateral two-dimensional(2D)heterostructures have great potential for device engineering at the atomistic scale.Their production is hindered by difficulties in obtaining atomically sharp interface free from intermixture.Here we report the continuous construction of a lateral heterostructure using blue phosphorene and tetrafluoro-tetracyanoquinodimethane(F_(4)TCNQ)as the building blocks.The lateral heterostructure is achieved by linking the semiconducting F_(4)TCNQ-Au metal organic framework and the metallic blue phosphorene-Au network via Au adatoms.The structural and electronic properties of the heterostructure have been investigated by means of scanning tunneling microscopy and spectroscopy(STM/S),complemented by density functional theory(DFT)calculations,demonstrating a structurally and electrically abrupt interface.Our approach offers the possibility of high flexibility and control that can be extended to other metal-organic species and 2D materials,establishing a foundation for the development of atomically thin in-plane superlattice and devices.

关 键 词：phosphorene SELF-ASSEMBLY scanning tunneling microscopy two-dimensional materials density functional theory 

分 类 号：TB33[一般工业技术—材料科学与工程]