Highly Broadband Absorber Using Plasmonic Titanium Carbide (MXene)

Abstract

Control of light transmission and reflection through nanostructured materials has led to demonstration of metamaterial absorbers that have augmented the performance of energy harvesting applications of several optoelectronic and nanophotonic systems. Here, for the first time, a broadband plasmonic metamaterial absorber is fabricated using two-dimensional titanium carbide (Ti 3 C 2 T x ) MXene. Arrays of nanodisks made of Ti 3 C 2 T x exhibit strong localized surface plasmon resonances at near-infrared frequencies. By exploiting the scattering enhancement at the resonances and the optical losses inherent to Ti 3 C 2 T x MXene, high-efficiency absorption (∼90%) for a wide wavelength window of incident illumination (∼1.55 μm) has been achieved.

Electrochromic Effect in Titanium Carbide MXene Thin Films Produced by Dip‐Coating

“…To probe only the change in optical properties of the WE, a 0.5 cm diameter hole was made in the Ti 3 C 2 T x CE to avoid contribution of the CE in the UV-vis-NIR spectrum (Figure 1a). [28] According to previous studies, it was suggested that the absorption peak at ≈770 nm corresponds to a plasmonic effect, [42,43] more specifically to a transversal surface plasmon, which would explain the independence of the peak position on the flake size. [28] According to previous studies, it was suggested that the absorption peak at ≈770 nm corresponds to a plasmonic effect, [42,43] more specifically to a transversal surface plasmon, which would explain the independence of the peak position on the flake size.…”

“…The UV-vis-NIR spectrum of a Ti 3 C 2 T x MXene thin film has several characteristic features, such as a broad absorption peak around 760-780 nm and an absorption peak in the UV region ( Figure 1c). [28] According to previous studies, it was suggested that the absorption peak at ≈770 nm corresponds to a plasmonic effect, [42,43] more specifically to a transversal surface plasmon, which would explain the independence of the peak position on the flake size. [22,43] Electrochromic properties of the Ti 3 C 2 T x device were studied by in situ UV-vis-NIR spectroscopy during electrochemical cycling in 1 m phosphoric acid polyvinyl alcohol gel electrolyte (H 3 PO 4 /PVA gel).…”

Nonlinear Few‐Layer MXene‐Assisted All‐Optical Wavelength Conversion at Telecommunication Band

“…Femtosecond bulk laser has been realized by using few‐layer Ti 3 C 2 T x as saturable absorber . The utilization for plasmonic of MXene has also been demonstrated by Chaudhuri et al Although there have been several important works on the study of MXene in nonlinear optics, the study of the nonlinear optical phenomenon of MXene is still at its early stage, especially the Kerr effect of the MXene and its application have barely been studied. It is intriguing to explore the nonlinear Kerr effect of MXene and investigate its application in the all‐optical signal processing.…”

Biomimetic MXene Textures with Enhanced Light‐to‐Heat Conversion for Solar Steam Generation and Wearable Thermal Management

“…Figure d and Figure S7d of the Supporting Information represent the simulated electric‐field ( E ‐field) profiles (| E |/| E 0 |) of different‐generation MXene structures at three NIR wavelengths of 1500, 2000, and 2500 nm. Compared with G 0 MXene structure, the electric field maps of higher generation MXene structures show widely spread hot spots around the MXene structures, indicating field confinement induced by strong localized surface plasmon resonances at near‐infrared frequencies . Through the theoretical and experimental analysis, the broadband light absorption can be concluded as follows.…”

“…The thicknesses of G 0 , G 1 , and G 2 MXene nanocoatings were set as same as those of the corresponding experimental samples with the MXene loadings at 0.32 mg cm −2 (i.e., 1140, 284, and 71 nm for G 0 , G 1 , and G 2 MXene nanocoatings, respectively). The permittivity of MXene were referred to the previous work …”