Circuit Model for an Ultrathin Metasurface Based on a Broadband Tungsten Solar Absorber

Mortazavifar, Seyedeh Leila; Salehi, Mohammad Reza; Shahraki, Mojtaba

doi:10.1007/s11664-022-09933-9

Cited by 3 publications

(1 citation statement)

References 103 publications

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“…5 It is believed that they will expand more rapidly in the coming years. [6][7][8][9] Silicon (Si) is a prominent material in PV systems, and Si accounts for the largest share of the SC market. Si has unique properties and is found abundantly in nature.…”

Section: Introductionmentioning

confidence: 99%

Light absorption enhancement of silicon solar cell based on horizontal nanowire arrays

et al. 2023

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.The effects of geometry and horizontal positioning of ultrathin triangular silicon nanowires (SiNWs) on the function of solar cells (SCs) have been investigated. Two differentiated methods have been presented to improve the current density of SiNW-SCs. First, a semiperiodic array is used for better utilization of the optical antenna effect. In the second method, several NWs with different geometries are used to achieve broadband absorption. The key to increase absorption is irregularity. Therefore, maximum light absorption is achieved by introducing irregular NWs. A set of optimized irregular NWs have better properties compared to other broadband structures. Using irregular NW arrays, the increase in the absorption of SCs can be improved without applying more absorbent materials. Optimization processes are used to obtain the maximum current density of SCs.

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Section: Introductionmentioning

confidence: 99%

Light absorption enhancement of silicon solar cell based on horizontal nanowire arrays

et al. 2023

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Design and optimization of hexagonal tungsten ring metasurface perfect absorbers with circuit model

Sarikhani,

Salehi,

Mortazavifar

et al. 2024

Surface & Interface Analysis

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In this paper, a perfect absorber (PA) based on tungsten is proposed to include hexagonal‐shaped metasurface absorbers with varying hole sizes ranging from quadrangular to circular, allowing them to cover a wide wavelength spectrum. The study investigates the effects of various parameters, including the number of sides of the inner hole, on the absorber's performance and identifies the most suitable absorber by introducing an equivalent circuit. The outcomes of full‐wave numerical simulations primarily based on the finite element method (FEM) highly correspond to the final results of the circuit model. Additionally, the circuit model significantly reduces computation time and requires less storage compared with full‐wave simulations. The results show that the hexagonal‐square metasurface absorber achieves exceptional absorption rates, with an average of 99.9% in the 431 to 532 nm wavelength range and over 90% in the 300 to 915 nm range. The hexagonal‐hexagonal metasurface absorber also exhibits high absorption rates, with an average of over 99% in the 431 to 518 nm and 700 to 780 nm ranges, and over 90% in the 300 to 940 nm range. The absorption performance of the proposed hexagonal‐circle metasurface absorber is also remarkable, with an absorption value of over 99% in the 670 to 771 nm range and above 90% in the 365 to 991 nm range. These models can be utilized to design and simulate other subwavelength absorbers in a broad frequency range, including terahertz and visible light, making them suitable for various applications.

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Conceptional Pure-Tungsten Metasurfaces Based on Femtosecond Laser Nanomanufacturing

Liao,

Zhang,

2024

Engineering

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Circuit Model for an Ultrathin Metasurface Based on a Broadband Tungsten Solar Absorber

Cited by 3 publications

References 103 publications

Light absorption enhancement of silicon solar cell based on horizontal nanowire arrays

Light absorption enhancement of silicon solar cell based on horizontal nanowire arrays

Design and optimization of hexagonal tungsten ring metasurface perfect absorbers with circuit model

Conceptional Pure-Tungsten Metasurfaces Based on Femtosecond Laser Nanomanufacturing

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