Broadband Tamm Plasmons in Chirped Photonic Crystals for Light-Induced Water Splitting

Abstract

An electrode of a light-induced cell for water splitting based on a broadband Tamm plasmon polariton localized at the interface between a thin TiN layer and a chirped photonic crystal has been developed. To facilitate the injection of hot electrons from the metal layer by decreasing the Schottky barrier, a thin n-Si film is embedded between the metal layer and multilayer mirror. The chipping of a multilayer mirror provides a large band gap and, as a result, leads to an increase in the integral absorption from 52 to 60 percent in the wavelength range from 700 to 1400 nm. It was shown that the photoresponsivity of the device is 32.1 mA/W, and solar to hydrogen efficiency is 3.95%.

Generation of Tamm Plasmon Resonances for Light Confinement Applications in Narrowband Gradient-Index Filters Based on Nanoporous Anodic Alumina

“…8,9 This property can be beneficial for a range of photonic applications such as infrared imaging, 10,11 solar energy conversion, 12 and photocatalytic processes. 13,14 However, other applications require a precise control over the spectral position and linewidth of surface plasmon resonances such as quantum optics, 15 filtering, 16 lensing, 17 lasing, 18 tweezing, 19 and sensing. 20 As such, plasmonic structures that can strongly confine light with high quality and narrow linewidths would provide new opportunities to develop advanced systems for emerging photonic technologies and applications.…”

“…The sensitivity of Tamm plasmon systems depends on how strongly light is confined by the thin metallic coating layer–dielectric mirror composite, which can be quantified by the quality factor of the Tamm structure ( Q Tamm )the figure of merit defined as the ratio of the wavelength of the resonance band (λ Tamm ) to its full width at half-maximum (FWHM Tamm ). However, surface plasmon resonances are typically characterized by broad resonance bands due to the intrinsically high optical losses associated with the imaginary part of the dielectric constant of metals, which is associated with the energy losses experienced by photons when these interact with the atoms of the metal. , This property can be beneficial for a range of photonic applications such as infrared imaging, , solar energy conversion, and photocatalytic processes. , However, other applications require a precise control over the spectral position and linewidth of surface plasmon resonances such as quantum optics, filtering, lensing, lasing, tweezing, and sensing …”

“… 8 , 9 This property can be beneficial for a range of photonic applications such as infrared imaging, 10 , 11 solar energy conversion, 12 and photocatalytic processes. 13 , 14 However, other applications require a precise control over the spectral position and linewidth of surface plasmon resonances such as quantum optics, 15 filtering, 16 lensing, 17 lasing, 18 tweezing, 19 and sensing. 20 …”