Journal
EUROPEAN PHYSICAL JOURNAL PLUS
Volume 138, Issue 6, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1140/epjp/s13360-023-04080-4
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In this study, we have theoretically introduced the reflectance spectrum of one-dimensional metamaterial photonic crystals based on the effective medium theory and transfer matrix formulism. The candidate structure consists of two metamaterials, hyperbolic and gyroidal metamaterials. The numerical results demonstrate the emergence of an angle-insensitive photonic bandgap within the wavelength range of 2.5 μm to 4 μm. Additionally, the impact of filling fraction, periodicity number, and thicknesses on the reflectivity of the proposed reflector has been investigated. This structure shows promise as an angle-insensitive reflector for various solar energy applications.
In this study, we have theoretically introduced the reflectance spectrum of the one-dimensional metamaterial photonic crystals (PCs) based on the effective medium theory (EMT) and the well-defined transfer matrix formulism. The candidate structure is composed of two metamaterials, including hyperbolic (CD) and gyroidal (G) metamaterials, such as [G (CD)(m)](s). In this regard, the gyroidal metamaterial is designed from Silver (Ag) of a gyroidal configuration in a dielectric host material (TiO2). Then, the hyperbolic metamaterial appears as a composite design of Indium Arsenide (InAs) and Ag for m periods. The numerical findings showed the emergence of an angle-insensitive photonic bandgap, extending from 2.5 mu m to 4 mu m. Meanwhile, we have considered the impact of the filling fraction, periodicity number (m and S), and thicknesses on the reflectivity of the proposed reflector. We believe that this structure could be promising as an angle-insensitive reflector for various solar energy applications, such as reflectors, wavelength-selective absorbers, smart widows, and an intermediate layer for solar cells.
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