Advanced Materials-Based Nano-absorbers for Thermo-Photovoltaic Cells

Agarwal, Sajal; Prajapati, Yogendra Kumar; Kumar, Ankur

doi:10.1007/978-981-16-5731-3_11

Cited by 2 publications

(1 citation statement)

References 38 publications

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“…Metamaterial-based absorbers exhibit excellent properties in capturing electromagnetic waves, rendering them potential nanophotonic devices for a variety of applications, including sensors, [1,2] bolometers, [3,4] imaging, [5] solar cells, [6] satellite communications, [7,8] thermophotovoltaics, [9][10][11] and photodetectors. [12,13] An effective way to achieve perfect absorption and minimize reflection includes the construction of circular squares, [14] nanodisks, [15] sawtooth, [16] cross structures, [17] columnar structures, [18] and the formation of stacked structures.…”

Section: Introductionmentioning

confidence: 99%

The Broadband Optical Absorption Performance of Rod‐Based Hyperbolic Metamaterials in Cuboidal Patterns

Liu,

Fu,

Jiang

et al. 2023

Advanced Optical Materials

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The development of metamaterials for advanced optical functions, especially optical metamaterials that can be synthesized through a colloidal assembly route, holds significance in nanophotonic research. A broadband absorber based on hyperbolic metamaterials (HMMs) with cuboidal patterns, constructed using 3D assembled nanorod arrays, is fabricated with the assistance of SU‐8 photoresist filling, photolithography, and atomic layer deposition (ALD) of Pt. The formation of cuboidal patterns creates a rod‐based metamaterial waveguide, enabling slow‐light dispersion in the visible frequency range. Slow light frequencies can be adjusted by varying the metal thickness and metal type, while they are minimally influenced by the width of each cuboidal framework. In addition to the absorption attributed to the rod metamaterial waveguides, the gap between the neighboring cuboidal frameworks induces a coupling effect that enhances light capture. The presence of curving morphologies on the side of each cuboidal framework further enhances optical absorption. The optimized broadband rod metamaterial absorber in cuboidal patterns can achieve an average absorptivity of 96.9% in the 400–1100 nm wavelength range.

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