Wide-angle solar absorber using only titanium nitride for efficient
Periodic micro-nano architectures can strengthen multi-resonance coupling, boosting solar energy harvesting efficiency. Here, we proposed and analyzed a wide-angle
Solar energy absorption is a very important field in photonics. The successful development of an efficient, wide-band solar absorber is an extremely powerful driver in this field. We propose an ultra-wideband (UWB) solar energy absorber composed of a Ti ring and SiO2-Si3N4-Ti thin films.
Using these advantages, we propose an ultra-broadband and wide-angle solar absorber as a candidate material for future applications in solar energy collection and thermal imaging and that such a structure is promising for photovoltaic applications. 2. Experimental method and numerical calculations 2.1. Structure design and simulations
Moreover, we also discuss the absorption performance of the solar absorber at different incidence angles. It is demonstrated that even at a large incidence angle of 60°, the average spectral absorption can exceed more than 70%. The proposed solar energy absorber is also insensitive to polarization.
Gao et al. designed an optical absorber that can operate continuously and efficiently in the near-infrared wavelength band, taking advantage of the reliability and high temperature resistance of TiN. Wu et al. proposed a solar absorber based on Ti and TiN multilayer ring structure.
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