Design and performance of OSR based on AZO metasurface

Yali Zhao; Teng Ma; Shuaipeng Chen; Xufeng Li

doi:10.1117/12.3005987

24 November 2023 Design and performance of OSR based on AZO metasurface

Yali Zhao, Teng Ma, Shuaipeng Chen, Xufeng Li

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129351F (2023) https://doi.org/10.1117/12.3005987
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

In this paper, an optical solar reflector (OSR) composed of an aluminum-doped zinc oxide (AZO) metasurface, a dielectric layer (SiO₂), and a reflective layer (metal layer) was designed based on Kirchhoff’s law, which combined high solar spectral reflection with high thermal mid-infrared emission performance. The effects of structural unit length, period, thickness, and dielectric layer thickness of the AZO metasurface on the solar spectral reflection and thermal mid-infrared emission (absorption) performance of the OSR were calculated and analyzed by using the time-domain finite-difference method, and a structural model of localized surface plasmon polariton (LSPP) based on broadband infrared enhanced absorption was established. The results show that the metal reflective layer material is Ag, and the OSR achieves the best absorption performance structure when the structural unit length L of the AZO metasurface is 1.1 μm; thickness h1 is 0.04 μm; period d is 1.3 μm, and SiO₂ medium thickness h2 is 1.4 μm. The designed OSR model has two absorption peaks reaching 99% in the range of 2.5–20 μm and absorption rates greater than 80% in the range of 5.0–8.3 μm and 10.2–15.9μm. The top square resonant unit makes the OSR independent of polarization and angle. The results provide a new idea to further improve the absorption rate of OSRs based on broadband absorption.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yali Zhao, Teng Ma, Shuaipeng Chen, and Xufeng Li "Design and performance of OSR based on AZO metasurface", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129351F (24 November 2023); https://doi.org/10.1117/12.3005987

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