In recent years, the exploration of solar absorbers has grown in favor due to the scarcity of energy. Here, we propose an absorber with an array of a circular ring surrounding disk (RSD) for solar energy capture. The novel structure keeps above 93.5% absorption with an average absorption of 96.95% in wavelengths from 300 to 4000 nm. Meanwhile, the proposed absorber is advantageous in that the structure is generalizable to other metals and dielectric materials. Furthermore, the data results show that the absorber has polarization-independent properties as well as maintaining >90% absorption in the considered wavelength range up to an incidence angle of 52° and >95% absorption at large process tolerances. Finally, the excellent absorption under the AM1.5 solar spectrum demonstrates the RSD absorber’s ability to capture solar energy. These results show the potential of the absorber for applications in electromagnetic invisibility cloaking, thermal emitters, and solar energy capture and conversion.

中文翻译：

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基于钛金属的超材料吸收体吸收太阳能宽带

近年来，由于能源稀缺，太阳能吸收器的探索越来越受到青睐。在这里，我们提出了一种带有圆环环绕盘（RSD）阵列的吸收器，用于捕获太阳能。这种新颖的结构保持了93.5%以上的吸收率，在300至4000 nm波长范围内平均吸收率为96.95%。同时，所提出的吸收器的优点在于该结构可推广到其他金属和介电材料。此外，数据结果表明吸收体具有与偏振无关的特性，并且在所考虑的波长范围内直至52°的入射角保持＞90％的吸收，并且在大工艺公差下保持＞95％的吸收。最后，AM1.5 太阳光谱下的出色吸收证明了 RSD 吸收器捕获太阳能的能力。这些结果显示了吸收器在电磁隐形斗篷、热发射器以及太阳能捕获和转换方面的应用潜力。