中国物理B ›› 2020, Vol. 29 ›› Issue (8): 87805-087805.doi: 10.1088/1674-1056/ab9cbf

所属专题: SPECIAL TOPIC —Terahertz physics

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High performance terahertz anisotropic absorption in graphene-black phosphorus heterostructure

Jinming Liang(梁晋铭), Jiangtao Lei(雷江涛), Yun Wang(汪云), Yan Ding(丁燕), Yun Shen(沈云), Xiaohua Deng(邓晓华)   

  1. 1 Department of Physics, Nanchang University, Nanchang 330031, China;
    2 Institute of Space Science and Technology, Nanchang University, Nanchang 330031, China
  • 收稿日期:2020-05-14 修回日期:2020-06-04 出版日期:2020-08-05 发布日期:2020-08-05
  • 通讯作者: Yun Shen, Xiaohua Deng E-mail:shenyun@ncu.edu.cn;dengxiaohua0@gmail.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61865009 and 61927813).

High performance terahertz anisotropic absorption in graphene-black phosphorus heterostructure

Jinming Liang(梁晋铭)1,2, Jiangtao Lei(雷江涛)2, Yun Wang(汪云)2, Yan Ding(丁燕)2, Yun Shen(沈云)1,2, Xiaohua Deng(邓晓华)2   

  1. 1 Department of Physics, Nanchang University, Nanchang 330031, China;
    2 Institute of Space Science and Technology, Nanchang University, Nanchang 330031, China
  • Received:2020-05-14 Revised:2020-06-04 Online:2020-08-05 Published:2020-08-05
  • Contact: Yun Shen, Xiaohua Deng E-mail:shenyun@ncu.edu.cn;dengxiaohua0@gmail.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61865009 and 61927813).

摘要:

Graphene and black phosphorus have attracted tremendous attention in optics due to their support of localized plasmon resonance. In this paper, a structure consisted of graphene-black phosphorus heterostructure is proposed to realize terahertz anisotropic near-perfect absorption. We demonstrate that strong plasmonic resonances in graphene-black phosphorus heterostructure nanoribbons can both be provided along armchair and zigzag directions, and dominated by the distance between the graphene and black phosphorus ribbons. In particular, the maximum absorption of 99.6% at 10.2 THz along armchair direction can be reached. The proposed high performance anisotropic structure may have promising potential applications in photodetectors, biosensors, and terahertz imaging.

关键词: graphene, black phosphorus, absorption, terahertz

Abstract:

Graphene and black phosphorus have attracted tremendous attention in optics due to their support of localized plasmon resonance. In this paper, a structure consisted of graphene-black phosphorus heterostructure is proposed to realize terahertz anisotropic near-perfect absorption. We demonstrate that strong plasmonic resonances in graphene-black phosphorus heterostructure nanoribbons can both be provided along armchair and zigzag directions, and dominated by the distance between the graphene and black phosphorus ribbons. In particular, the maximum absorption of 99.6% at 10.2 THz along armchair direction can be reached. The proposed high performance anisotropic structure may have promising potential applications in photodetectors, biosensors, and terahertz imaging.

Key words: graphene, black phosphorus, absorption, terahertz

中图分类号:  (Infrared and Raman spectra)

  • 78.30.-j
61.46.-w (Structure of nanoscale materials) 68.65.-k (Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties)