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Nano Research 2021, 14(3): 887-892 https://doi.org/10.1007/s12274-020-3194-x
Research Article | Issue | Published: 01 March 2021

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

Show Author's Information Nan Si1,§,  Tao Shen2,§,  Xinyi Liu2,  Dechun Zhou1,  Qingmin Ji1,  Wei Liu2,  Shuang Li2( ),  Tianchao Niu3( )
Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

§ Nan Si and Tao Shen contributed equally to this work.

Keywords:
two-dimensional materials, density functional theory, self-assembly, scanning tunneling microscopy, phosphorene
Topics:
Electronic propertiesGoldMetalsOrganic frameworks Organic semiconductor materialsOrganometallicsScanning tunneling microscopy
Cite this article:
Si N, Shen T, Liu X, et al. Lateral epitaxial growth of two-dimensional heterostructure linked by gold adatoms. Nano Research, 2021, 14(3): 887-892. https://doi.org/10.1007/s12274-020-3194-x
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Abstract Full text Electronic supplementary material About this article

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 (F4TCNQ) as the building blocks. The lateral heterostructure is achieved by linking the semiconducting F4TCNQ-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.


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Electronic supplementary material
About this article

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

Show Author's information Nan Si1,§, Tao Shen2,§, Xinyi Liu2, Dechun Zhou1, Qingmin Ji1, Wei Liu2, Shuang Li2( ), Tianchao Niu3( )
Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

§ Nan Si and Tao Shen contributed equally to this work.

Abstract

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 (F4TCNQ) as the building blocks. The lateral heterostructure is achieved by linking the semiconducting F4TCNQ-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.

Keywords: two-dimensional materials, density functional theory, self-assembly, scanning tunneling microscopy, phosphorene

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Acknowledgements

Publication history

Received: 22 August 2020
Revised: 15 October 2020
Accepted: 15 October 2020
Published: 01 March 2021
Issue date: March 2021

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature

Acknowledgements

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), and the Fundamental Research Funds for Central Universities (Nos. 30919011257, 30917015106, and 30918011340). T. C. N. thanks Dr. Jialin Zhang for helpful discussions on the structure of BlueP-Au network.

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