Affiliation:
1. School of Ocean Information Engineering, Jimei University, Xiamen 361021, China
2. Fujian Provincial Key Laboratory of Oceanic Information Perception and Intelligent Processing, Xiamen 361021, China
3. National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu 610054, China
Abstract
In this study, a novel ultra-broadband absorber is suggested and numerically analyzed to demonstrate that the suggested absorber can achieve an average absorbance of 98.6% in the visible to near-infrared wavelength range (496–2100 nm). The structure of the proposed new ultra-wideband absorber consists of four thin films of silicon dioxide (SiO2), iron (Fe), magnesium fluoride (MgF2), and chromium (Cr). We have examined the structure’s electromagnetic field intensity distribution at numerous selected optical wavelengths and the influence of various structural parameters on the absorption performance of the absorber to offer a physical mechanism underlying the ultra-broadband absorption effect. Furthermore, in the presence of high-performance absorption, the structure has the effect of stabilizing absorption at large angles of incidence and is polarization-independent at vertical angles of incidence. The study also assesses the solar absorption capability of this structure, indicating that the structure has potential applications in solar absorption, such as solar energy collection and conversion, solar power generation, and thermal emitters.
Funder
National Natural Science Foundation of China
Youth Talent Support Program of Fujian Province
Science Fund for Distinguished Young Scholars of Fujian Province
Science and Technology Major Project of Fujian Province
Innovation Fund for Young Scientists of Xiamen
Marine and Fishery Development Special Fund of Xiamen
Youth Talent Support Program of Jimei University
Xiamen Ocean and Fishery Development Special Fund Project
Xiamen Key Laboratory of Marine Intelligent Terminal R&D and Application
Subject
Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics
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