Journal of Infrared and Millimeter Waves, Volume. 44, Issue 1, 52(2025)
Research of terahertz frequency tunable coding metasurface based on perovskite materials
Fig. 1. Schematic diagram of the coding metasurface structure :(a) 0 structure in dark state ;(b) 1 structure in dark state ;(c) 0 structure in light state;(d) 1 structure in light state.
Fig. 2. (a)Insulating state amplitude of reflection(b) Insulating state reflection phase(c) Metallic state amplitude of reflection(d) Metallic state reflection phase
Fig. 3. Perovskite is insulated:(a) Beam pattern of the far field for the coding sequence 0101/0101 at 0.1 THz;(b) 0101/0101 at 0.14THz;(c) 0101/1010 at 0.1 THz;(d) 0101/1010 at 0.14 THz perovskite for insulating state with 0.14 THz far field。
Fig. 4. Perovskite is metallic:(a) Beam pattern of the far field for the coding sequence 0101/0101 at 0.1 THz ;(b) 0101/0101 at 0.14 THz;(c) 0101/1010 at 0.1 THz ;(d) 0101/1010 at 0.14 THz
Fig. 5. Device diagram of CH3NH3PbI3 encoding metasurface:(a) 0101/0101 structured encoded metasurface device without CH3NH3PbI3thin film;(b) 0101/1010 structured encoded metasurface device without CH3NH3PbI3 thin film;(c) Bottom metal layer of the device;(d) Device with CH3NH3PbI3 thin film.
Fig. 6. (a) perovskite absorption under dark and light conditions without a coded metasurface;(b) Reflection amplitude of coding metasurface units at different frequencies.
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Yi-Fan LI, He YANG, Rui YANG, Yi-Ming JIA, Jia-Min HU, Cun-Guang LOU, Yu YU, Xiu-Ling LIU, Jian-Quan YAO. Research of terahertz frequency tunable coding metasurface based on perovskite materials[J]. Journal of Infrared and Millimeter Waves, 2025, 44(1): 52
Category: Millimeter Wave and Terahertz Technology
Received: May. 16, 2024
Accepted: --
Published Online: Mar. 5, 2025
The Author Email: Yi-Fan LI (yifanli@tju.edu.cn)