Ultra-Broadband Refractory All-Metal Metamaterial Selective Absorber for Solar Thermal Energy Conversion
| Autor: | Tiaoming Niu, Zhong Lei Mei, Wenqiong Chen, Buxiong Qi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Chemical Engineering chemistry.chemical_element Physics::Optics 02 engineering and technology solar thermal energy conversion medicine.disease_cause 01 natural sciences Article 010309 optics 0103 physical sciences medicine General Materials Science Absorption (electromagnetic radiation) QD1-999 Plasmon broadband absorption business.industry refractory all-metal Metamaterial 021001 nanoscience & nanotechnology Surface plasmon polariton Selective surface metamaterial selective absorber Chemistry chemistry Metamaterial absorber Optoelectronics 0210 nano-technology business Ultraviolet Titanium |
| Zdroj: | Nanomaterials Volume 11 Issue 8 Nanomaterials, Vol 11, Iss 1872, p 1872 (2021) |
| ISSN: | 2079-4991 |
| DOI: | 10.3390/nano11081872 |
| Popis: | A full-spectrum near-unity solar absorber has attracted substantial attention in recent years, and exhibited broad application prospects in solar thermal energy conversion. In this paper, an all-metal titanium (Ti) pyramid structured metamaterial absorber (MMA) is proposed to achieve broadband absorption from the near-infrared to ultraviolet, exhibiting efficient solar-selective absorption. The simulation results show that the average absorption rate in the wavelength range of 200–2620 nm reached more than 98.68%, and the solar irradiation absorption efficiency in the entire solar spectrum reached 98.27%. The photothermal conversion efficiency (PTCE) reached 95.88% in the entire solar spectrum at a temperature of 700 °C. In addition, the strong and broadband absorption of the MMA are due to the strong absorption of local surface plasmon polariton (LSPP), coupled results of multiple plasmons and the strong loss of the refractory titanium material itself. Additionally, the analysis of the results show that the MMA has wide-angle incidence and polarization insensitivity, and has a great processing accuracy tolerance. This broadband MMA paves the way for selective high-temperature photothermal conversion devices for solar energy harvesting and seawater desalination applications. |
| Databáze: | OpenAIRE |
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