中国物理B ›› 2020, Vol. 29 ›› Issue (3): 37302-037302.doi: 10.1088/1674-1056/ab69ec

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Defect engineering on the electronic and transport properties of one-dimensional armchair phosphorene nanoribbons

Huakai Xu(许华慨), Gang Ouyang(欧阳钢)   

  1. Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Synergetic Innovation Center for Quantum Effects and Applications(SICQEA), Hunan Normal University, Changsha 410081, China
  • 收稿日期:2019-12-10 修回日期:2020-01-07 出版日期:2020-03-05 发布日期:2020-03-05
  • 通讯作者: Gang Ouyang E-mail:gangouy@hunnu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11574080 and 91833302).

Defect engineering on the electronic and transport properties of one-dimensional armchair phosphorene nanoribbons

Huakai Xu(许华慨), Gang Ouyang(欧阳钢)   

  1. Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Synergetic Innovation Center for Quantum Effects and Applications(SICQEA), Hunan Normal University, Changsha 410081, China
  • Received:2019-12-10 Revised:2020-01-07 Online:2020-03-05 Published:2020-03-05
  • Contact: Gang Ouyang E-mail:gangouy@hunnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11574080 and 91833302).

摘要: We investigate the electronic and transport properties of one-dimensional armchair phosphorene nanoribbons (APNRs) containing atomic vacancies with different distributions and concentrations using ab initio density functional calculations. It is found that the atomic vacancies are easier to form and detain at the edge region rather than a random distribution through analyzing formation energy and diffusion barrier. The highly local defect states are generated at the vicinity of the Fermi level, and emerge a deep-to-shallow transformation as the width increases after introducing vacancies in APNRs. Moreover, the electrical transport of APNRs with vacancies is enhanced compared to that of the perfect counterparts. Our results provide a theoretical guidance for the further research and applications of PNRs through defect engineering.

关键词: density-functional theory, defect engineering, armchair phosphorene nanoribbon, non-equilibrium Green', s function

Abstract: We investigate the electronic and transport properties of one-dimensional armchair phosphorene nanoribbons (APNRs) containing atomic vacancies with different distributions and concentrations using ab initio density functional calculations. It is found that the atomic vacancies are easier to form and detain at the edge region rather than a random distribution through analyzing formation energy and diffusion barrier. The highly local defect states are generated at the vicinity of the Fermi level, and emerge a deep-to-shallow transformation as the width increases after introducing vacancies in APNRs. Moreover, the electrical transport of APNRs with vacancies is enhanced compared to that of the perfect counterparts. Our results provide a theoretical guidance for the further research and applications of PNRs through defect engineering.

Key words: density-functional theory, defect engineering, armchair phosphorene nanoribbon, non-equilibrium Green', s function

中图分类号:  (Surface states, band structure, electron density of states)

  • 73.20.At
71.15.Mb (Density functional theory, local density approximation, gradient and other corrections) 73.23.-b (Electronic transport in mesoscopic systems)