Tuning the electronic transport anisotropy in α-phase phosphorene through superlattice design

Yuanyuan He, Shiyun Xiong, Feifei Xia, Zhibin Shao, Jianwei Zhao, Xiujuan Zhang, Jiansheng Jie, and Xiaohong Zhang
Phys. Rev. B 97, 085119 – Published 12 February 2018
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Abstract

Rational tuning the anisotropic electronic properties of monolayer phosphorene is essential to their applications in electronic and optoelectronic devices. By combining the density functional theory and the nonequilibrium Green's function method, we developed a strategy to tune the anisotropic transport properties of phosphorene by designing stable arsenic-phosphorene (AsxP1x) superlattice (SL). It was found that, with a careful design of As:P ratio and atomic arrangement, the anisotropic transport properties could be tuned in a wide range. The transport current along the zigzag direction, which is very low in pristine phosphorene, was gradually enhanced by increasing the As:P ratio, and even became larger than that along armchair direction when the As:P ratio achieved 1:1 under a given arrangement of As atoms in AsxP1x SL. The tunable anisotropic transport properties of AsxP1x SL are attributed to the interplay between the different scattering rates related to the number and orientation of As-P interfaces. This finding demonstrates that the AsxP1x SL design could be an effective approach to tune the anisotropic electronic properties of monolayer phosphorene, which is important for the development of high-performance electronic and optoelectronic devices based on phosphorene.

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  • Received 20 April 2017
  • Revised 21 December 2017

DOI:https://doi.org/10.1103/PhysRevB.97.085119

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Yuanyuan He1,2, Shiyun Xiong1,*, Feifei Xia1, Zhibin Shao1, Jianwei Zhao2, Xiujuan Zhang1, Jiansheng Jie1,†, and Xiaohong Zhang1,‡

  • 1Institute of Functional Nano& Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, People's Republic of China
  • 2College of Material and Textile Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, People's Republic of China

  • *xiongshiyun216@163.com
  • jsjie@suda.edu.cn
  • xiaohong_zhang@suda.edu.cn

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Issue

Vol. 97, Iss. 8 — 15 February 2018

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