• 文献标题:   Dual-Stimulus Control for Ultra-Wideband and Multidimensional Modulation in Terahertz Metasurfaces Comprising Graphene and Metal Halide Perovskites
  • 文献类型:   Article
  • 作  者:   YANG MS, LI TT, YAN X, LIANG LJ, YAO HY, SUN ZQ, LI J, LI J, WEI DQ, WANG M, YE YX, SONG XX, ZHANG HT, YAO JQ
  • 作者关键词:   modulation, graphenepolyimideperovskite, terahertz metasurface, phase, transmission amplitude
  • 出版物名称:   ACS APPLIED MATERIALS INTERFACES
  • ISSN:   1944-8244 EI 1944-8252
  • 通讯作者地址:  
  • 被引频次:   9
  • DOI:   10.1021/acsami.1c15222 EA DEC 2021
  • 出版年:   2022

▎ 摘  要

Perovskites and graphene are receiving a meteoric rise in popularity in the field of active photonics because they exhibit excellent optoelectronic properties for dynamic manipulation of light-matter interactions. However, challenges still exist, such as the instability of perovskites under ambient conditions and the low Fermi level of graphene in experiments. These short- comings limit the scope of applications when they are used alone in advanced optical devices. However, the combination of graphene and perovskites is still a promising route for efficient control of light-matter interactions. Here, we report a dual-optoelectronic metadevice fabricated by integrating terahertz metasurfaces with a sandwich complex composed of graphene, polyimide, and perovskites for ultra-wideband and multidimensional manipulation of higher-order Fano resonances. Owing to the photogenerated carriers and electrostatic doping effect, the dual optoelectronic metadevice showed different manipulation behavior at thermal imbalance (electrostatic doping state of the system). The modulation depth of the transmission amplitude reached 200%, the total resonant frequency shift was 800 GHz, and the tunable range of the resonant frequency was 68.8%. In addition, modulation of the maximum phase reached 346 degrees. This work will inspire a new generation of metasurface-based optical devices that combine two active materials.