Solar absorbers are designed for absorbing visible, infrared, and ultraviolet frequencies. Most of the absorbers designed so far have been for absorbing visible frequencies, and there is a strong need for designing infrared absorbers and ultraviolet absorbers. We present a broadband near-infrared absorber using metamaterial gold resonators. The gold resonators are uniformly placed over the ${\rm{Si}}{{\rm{O}}_2}$ substrate in different patterns. All of these patterns’ solar absorbers are analyzed, and the results are presented in the form of reflection, transmission, absorption, electric field, permittivity, permeability, and refractive index. The parameter physical size is also varied, and results are observed in terms of reflection, absorption, and transmission. The optimized design is also obtained by analyzing all the design results. Comparative tables are also presented for all of these designs. The results are obtained for the near-infrared frequency range of 155 THz to 425 THz. The proposed uniform metamaterial absorber is applicable in photovoltaic applications and energy harvesting applications.

中文翻译：

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基于宽带超材料的近红外吸收器，使用均匀放置的金谐振器阵列

太阳能吸收器设计用于吸收可见，红外和紫外线频率。迄今为止设计的大多数吸收器都是用于吸收可见频率的，因此强烈需要设计红外吸收器和紫外线吸收器。我们介绍了使用超材料金谐振器的宽带近红外吸收器。金谐振器均匀地放置在$ {\ rm {Si}} {{\ rm {O}} _ 2} $上基板以不同的图案。分析了所有这些图案的太阳能吸收器，并以反射，透射，吸收，电场，介电常数，磁导率和折射率的形式表示了结果。参数的物理尺寸也有所变化，并且在反射，吸收和透射方面观察到结果。通过分析所有设计结果，也可以获得优化的设计。还列出了所有这些设计的比较表。在155 THz至425 THz的近红外频率范围内获得了结果。所提出的均匀超材料吸收器适用于光伏应用和能量收集应用。