Perfect metamaterial absorber with high fractional bandwidth for solar energy harvesting

Abstract

A new perfect metamaterial absorber (PMA) with high fractional bandwidth (FBW) is examined and verified for solar energy harvesting. Solar cells based on perfect metamaterial give a chance to increase the efficiency of the system by intensifying the solar electromagnetic wave that incident on the device. The designed structure is mostly offered in the visible frequency range so as to exploit the solar’s energy efficiently. Parametric investigations with regard to the measurements of the design structure are fulfilled to characterize the absorber. The finite-difference time-domain (FDTD) method-based CST simulator was used to keep the pattern parameters and absorbance analysis. The metamaterial shows almost 99.96% and 99.60% perfect absorption at 523.84 THz and 674.12 THz resonance frequencies. Moreover, absorption’s FBW is studied, and 39.22% FBW is found. The results confirm that the designed PMA can attain very high absorption peak at two modes such as transverse electric (TE) and transverse magnetic (TM) mode. Other than the numerical outcomes demonstrated that the suggested configuration was also polarization angle insensitive. In addition, the change of absorbance of the structure has provided a new kind of sensor applications in these frequency ranges. Therefore, the suggested metamaterial absorber offers perfect absorption for visible frequency ranges and can be used for renewable solar energy harvesting applications.

Design and Simulation of Dual band metamaterial absorber for single junction solar cells

“…When the light strikes the solar cell, the electrons will get charged and it will move from lower energy level to higher energy level. The presence of higher electric field will result in more absorption rate and can provide more current distribution [11]. When compared to other works, this proposed design is having less size which will reduce the fabrication cost.…”

A Multi-Band Near Perfect Polarization and Angular Insensitive Metamaterial Absorber With a Simple Octagonal Resonator for Visible Wavelength

“…Plasmonic resonance characteristics of a dielectric substrate [19], [20], perfect impedance match [21], [22], symmetric structure of the resonator [23], [24], and a good E-field, H-field and surface charge distribution [25], [26] causes high absorption of an PMA. Most common MA absorber structures are three-layered structures [27], [28], but there are also two-layered [29], four-layered [30], [31], multi-layered stacks [32]- [35]. Because of the periodic structure of PMAs, high absorption properties are exhibited over a large wavelength despite the PMAs being ultrathin [20], [36], [37], and polarization-insensitive [38], [39].…”

Additively manufactured metastructure design for broadband radar absorption

“…Current researches are aimed at developing EM absorbers with the properties of thinner thickness, lower density, wider angle of incidence tolerance, better polarization insensitivity, and stronger and broader bandwidth absorption [1]. Though improvement to these properties can hardly be met simultaneously, there is a need to develop absorbers with optimal property mix that is peculiar to the area of application such as radar stealth [2][3][4], electromagnetic compatibility [5], energy harvesting [6], and so on. Recently, absorber design employing metastructure concept has become a popular approach [7][8][9] for improving radar stealth performance as it permits realization of desired absorption characteristics by carefully manipulating the geometry of the structure and/or material composition.…”