Programme

P.29 -- Posters, VCTP-50

Date: Tuesday, 5 August 2025

Time: 08:30 - 10:00

Design and Optimization of Multilayer Metamaterial Perfect Absorbers for Broadband Solar Energy Harvesting

Do T. Nga (1), Chu Thuy Anh (1), Pham Tuan Kiet (1), Nguyen Thi Thao Duyen (2), Vu D. Lam (3), Anh D. Phan (2,4)

(1) Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam; (2) Faculty of Materials Science and Engineering, Phenikaa University, Yen Nghia Ward, Ha Dong District, Hanoi, Vietnam; (3) Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam; (4) Phenikaa Institute for Advanced Study, Phenikaa University, Hanoi, Vietnam

Multilayer metamaterial-based broadband absorbers have emerged as promising candidates for advanced solar energy harvesting due to their ability to achieve near-perfect absorption across a broad spectral range (0.3–2.5 µm), which covers the majority of the solar spectrum. Their flat form is the simplest structure and make them fabricated easily. In this study, we design and optimize three different multilayer metamaterial perfect absorbers for solar energy applications. One of our metamaterials has the averaged absorption across the spectral wavelength higher than 93 \%. The electromagnetic field distributions within the structure are analyzed using CST Studio Suite to reveal the underlying absorption mechanisms. We also assess the influence of different dielectric function datasets for the same material and find that the absorption performance remains consistently high. Our findings pave the way for developing high-efficiency solar absorbers and offering practical guidelines for material selection in real-world energy applications.

Presenter: Do Thi Nga