Double Negative Nano-Structured Metamaterial Absorber For Solar Thermo-Photovoltaic Systems
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Date
2021-05
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Publisher
Department of Electrical and Electronic Engineering
Abstract
A double negative nano-structured polarization insensitive perfect metamaterial absorber (PMA) is observed and substantiated for solar photo-voltaic systems. This kind of absorbers with high fractional bandwidth (FBW) are currently drawing massive interest throughout the research of optics. Specially in solar harvesting metamaterial absorbers can give a huge boost in efficiency by intensifying the solar electromagnetic wave. Visible wavelength has been the key focus of the proposed design so that the structure can utilize solar energy proficiently. Aluminium and Gallium Arsenide have been chosen as material for their higher electron mobility along with temperature stability. Enormous parametric inspections have been carried out for proper characterization of the PMA absorber and relating the physics laying behind the results have been explained. Finite Integration Technique (FIT) is used in simulation to perform the characterization and calculation of absorbance and reflectance from scattering parameters. The metamaterial shows almost 99.86%, 98.87%, 97.61% and 99.84% perfect absorption at 677.6 THz, 624.8 THz, 560 THz and 522.4 THz resonance frequencies at 0° polarization angle. In all three modes of waveguide propagation such as Transverse Electromagnetic (TEM), Transverse Electric (TE) and Transverse Magnetic (TM) mode the designed model shows similar absorbance. The insensitivity of polarization angle has also been verified. So, the proposed metamaterial absorber exhibits proper absorption for optical ranges and can be used for solar photo-voltaic systems.
Description
submitted by Minhazul Karim,
bearing Matric ID. ET163075 and Md. Mehrabul Amin Molla, bearing Matric ID.
ET163082 of session Spring 2020