Coatings, Journal Year: 2025, Volume and Issue: 15(2), P. 243 - 243

Published: Feb. 19, 2025

As a widely used clean energy source, solar has demonstrated significant promise across various applications due to its wide spectral range and efficient absorption performance. This study introduces cross-structured, ultra-broadband absorber utilizing titanium (Ti) dioxide (TiO2) as foundational materials. The exhibits over 90% within the 280–4000 nm wavelength surpasses 95% in broader spectrum from 542 3833 through cavity coupling effect of incident light excitation subsequent initiation surface plasmon resonance mechanism, thus successfully achieving goal broadband high absorption. Through finite difference time domain method (FDTD) simulation, average efficiency reaches 97.38% 280 4000 nm, it is 97.75% nm. At air mass 1.5 (AM 1.5), 97.46%, loss 2.54%, which extremely efficiency. In addition, thanks material considerations, adopts variety high-temperature resistant materials, making thermal radiation environment still good; specifically, at temperature 900 K, can reach 97.27%, extreme 1800 K temperature, maintain 97.52% radiation, further highlighting excellent stability comprehensive structure optical properties, give broad applicability an ideal or emitter. More importantly, insensitive polarization state effectively handle lines wide-angle range. photothermal conversion (Hereafter referred pc efficiency) sustain elevated level under conditions, enables flexibly adapt diverse environmental especially suitable for integration application photovoltaic systems, broaden potential field renewable energy.

Language: Английский