• 文献标题:   Tunable resonance of a graphene-perovskite terahertz metasurface
  • 文献类型:   Article
  • 作  者:   LI GB, WANG GC, ZHANG Y, SHEN JL, ZHANG B
  • 作者关键词:  
  • 出版物名称:   NANOSCALE ADVANCES
  • ISSN:   2516-0230
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1039/d2na00577h EA JAN 2023
  • 出版年:   2023

▎ 摘  要

The combination of graphene and perovskite has received extensive research attention because its photoelectric properties are excellent for the dynamic manipulation of light-matter interactions. Combining graphene and perovskite with a metasurface is expected to effectively improve the metasurface device's performance. Here, we report a terahertz graphene-perovskite metasurface with a tunable resonance. Under 780 nm laser excitation, the device's THz transmission is significantly reduced, and the Fano resonance mode can be manipulated in multiple dimensions. We verify the experimental results using a finite-difference time-domain (FDTD) simulation. Graphene and perovskite interact strongly with the metasurface, resulting in a short-circuit effect, which significantly weakens the resonance intensity of the Fano mode. The photoinduced conductivity enhancement intensifies the short-circuit effect, reducing the THz transmission and resonance intensity of the Fano mode and causing the resonance frequency to redshift. Finally, we provide a reference value for applications of hybrid metasurface-based optical devices in a real environment by investigating the effect of moisture on device performance.