Ultra-broadband metamaterial solar absorber based on resonant cylinder shell arrays

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells Pub Date : 2025-09-29 DOI:10.1016/j.solmat.2025.113981

Zimeng Zhou , Jiu Hui Wu

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Abstract

The visible light spectrum is critical for solar energy utilization, while the infrared band is pivotal to thermal management. However, designing a broadband absorber capable of effectively capturing radiation across both these two bands remains challenging. In this paper, a composite metamaterial absorber (CMMA) is proposed to harvest broadband radiation with average absorptivity of 95.47 % across the ultraviolet–visible–infrared spectrum (0.2–20 μm). Additionally, it's revealed that this near-perfect absorption is enabled by the coupled excitation of surface plasmon resonance (SPR), cavity resonance (CR), and Fabry-Pérot (F-P) cavity effect through calculating effective impedance of the absorber and simulating the electromagnetic field and current distribution. Based on the energy efficiency formula, the absorber is validated to exhibit a high thermal emission efficiency exceeding 94 % within the temperature range of 1000–2500 K, along with high-efficiency solar energy capture capabilities. Furthermore, the CMMA is polarization-insensitive and supports large-angle incidence. These performance advantages render the proposed CMMA highly promising for military and civilian applications such as infrared detection, solar energy harvesting, and radiative thermal management.

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基于共振圆柱壳阵列的超宽带超材料太阳能吸收器

可见光光谱是太阳能利用的关键，而红外波段是热管理的关键。然而，设计一种能够有效捕获这两个波段的辐射的宽带吸收器仍然具有挑战性。本文提出了一种复合超材料吸收体（CMMA），在紫外-可见-红外光谱（0.2 ~ 20 μm）范围内捕获平均吸收率为95.47%的宽带辐射。此外，通过计算吸收体的有效阻抗，模拟电磁场和电流分布，揭示了这种近乎完美的吸收是由表面等离子体共振（SPR）、腔共振（CR）和F-P腔效应的耦合激发实现的。根据能效公式，该吸收器在1000-2500 K的温度范围内具有超过94%的高热发射效率，并具有高效的太阳能捕获能力。此外，CMMA对偏振不敏感，支持大角度入射角。这些性能优势使得所提出的CMMA在军事和民用应用方面非常有前景，例如红外探测、太阳能收集和辐射热管理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solar Energy Materials and Solar Cells 工程技术-材料科学：综合

CiteScore

12.60

自引率

11.60%

发文量

513

审稿时长

47 days

期刊介绍： Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.