Pattern-free solar absorber driven by superposed Fabry–Perot resonances

Abstract

We develop a design method for a pattern-free absorber driven by superposed Fabry–Perot resonances, which can achieve an average absorption of 96% in the solar irradiation band.

A tungsten-based metamaterial emitter for solar thermophotovoltaic systems

“…5, the collision between electrons and the surface of micro- and nanostructures generates high-energy electrons and surface plasmonic resonance (SPR) occurs due to the small dielectric loss of tungsten. 48,49 Fig. 5(a), (b), (d) and (e) show that the top square cavity concentrates strong electric and magnetic fields, indicating that the cavity resonance (CR) due to the cavity structure holds a crucial position in enhancing performance of the metamaterial emitter.…”

An elliptical nanoantenna array plasmonic metasurface for efficient solar energy harvesting

“…Refractory plasmonic materials, such as TiN, have gained interest due to their affordability, low work function, exceptional chemical stability, high melting point, wide-spectrum absorption, and compatibility with semiconductor technology. 53,54 While TiN has been used in solar absorbers 29,55 to achieve absorption above 90% and broadband absorption, the nanostructures have a thickness of over 500 nm, necessitating a broadband absorber with a thinner construction. Ultrathin metasurface absorbers reduce recombination losses and fabrication costs, making them more suitable for solar energy conversion.…”

Multilayer stacked ultra-wideband perfect solar absorber and thermal emitter based on SiO2-InAs-TiN nanofilm structure

“…Therefore, a key part of the current important progress regarding solar absorbers is how to achieve high-performance solar energy collection by absorbers. 14–16 Among them, it has been found that the efficient collection of solar energy can be achieved through the special light absorption properties of nanomaterials, 17,18 which can effectively capture the sunlight and convert it into usable energy, 19 and thus the design of specific nanomaterial structures and different placement methods 20,21 has become one of the main directions for exploring solar absorbers. In 2017, a TiO 2 -TiN disc-based stacked structure was proposed, 22 achieving a bandwidth of 1110 nm with an absorption rate of more than 90%.…”