scholarly journals Broadband Absorption Based on Thin Refractory Titanium Nitride Patterned Film Metasurface

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1092
Author(s):  
Dewang Huo ◽  
Xinyan Ma ◽  
Hang Su ◽  
Chao Wang ◽  
Hua Zhao
Keyword(s):  
Titanium Nitride ◽  
Oblique Incidence ◽  
Normal Incidence ◽  
Perfect Absorber ◽  
Size Parameter ◽  
Perfect Absorption ◽  
Broadband Absorption ◽  
Solar Energy Harvesting ◽  
Difference Time ◽  
High Absorption

In this paper, a thin metasurface perfect absorber based on refractory titanium nitride (TiN) is proposed. The size parameter of the metasurface is investigated based on the finite difference time domain method and transfer matrix method. With only a 15-nm-thick TiN layer inside the silica/TiN/silica stacks standing on the TiN substrate, the near-perfect absorption throughout the visible regime is realized. The cross-talk between the upper and lower dielectric layers enables the broadening of the absorption peak. After patterning the thin film into a nanodisk array, the resonances from the nanodisk array emerge to broaden the high absorption bandwidth. As a result, the proposed metasurface achieves perfect absorption in the waveband from 400 to 2000 nm with an average absorption of 95% and polarization-insensitivity under the normal incidence. The proposed metasurface maintains average absorbance of 90% up to 50-degree oblique incidence for unpolarized light. Our work shows promising potential in the application of solar energy harvesting and other applications requiring refractory metasurfaces.

Titanium nitride nano-disk arrays-based metasurface as a perfect absorber in the visible range

2018 ◽  
Vol 32 (01) ◽  
pp. 1750365 ◽  
Author(s):  
Qiuqun Liang ◽  
Yongqi Fu ◽  
Xiongping Xia ◽  
Liu Wang ◽  
Rummei Gao
Keyword(s):  
Titanium Nitride ◽  
Oblique Incidence ◽  
Light Polarization ◽  
Visible Range ◽  
Perfect Absorber ◽  
Disk Arrays ◽  
Plasmonic Resonance ◽  
Intrinsic Loss ◽  
Absorption Performance ◽  
High Absorption

An ultrathin metasurface-based absorber consisting of titanium nitride (TiN) nano-disk arrays–dielectric layer-TiN substrate is proposed in this paper. The absorber exhibits near-unity absorption in the whole visible range of 380–780 nm. Our results demonstrate that the proposed metasurface-based absorber is not only independent of light polarization, but also exhibits angle-independent absorption behavior for oblique incidence up to 70[Formula: see text]. The high absorption performance of the TiN nano-disk arrays-based absorber can attribute to two different loss mechanisms associated with the intrinsic loss and plasmonic resonance.

Design and Analysis of High Absorber Based on Sub-Wavelength Grating Structure

2017 ◽  
Vol 872 ◽  
pp. 89-93
Author(s):  
Kun Li ◽  
Yu Qing Xiong ◽  
Sheng Zhu Cao ◽  
Kai Feng Zhang ◽  
Hu Wang ◽  
...  
Keyword(s):  
Finite Difference Time Domain ◽  
Electric Field Distribution ◽  
Layer Structure ◽  
Single Layer ◽  
Double Layers ◽  
Broadband Absorption ◽  
Grating Structure ◽  
Difference Time ◽  
High Absorption ◽  
Sub Wavelength

Two kinds of high absorber were designed based on sub-wavelength grating structure for aluminum substrate. The absorption and electric field distribution of these two structures were calculated by using the finite difference time domain method. One absorber was obtained by using Al2O3/SiO2 double layers and Al rectangular sub-wavelength layer which has high absorption peaks both in TE polarization and TM polarization in infrared spectrum. Another absorber was a single layer structure with a triangular sub-wavelength grating structure which had a broadband absorption in TE polarization at spectral range of 300-1000nm.Simulation results showed that the absorption of this absorber increase and then decreases with the increasing of the height of sub-wavelength grating. The average absorption reached the maximum when the height of grating was 800nm.

scholarly journals Multiple-patterning colloidal lithography-implemented scalable manufacturing of heat-tolerant titanium nitride broadband absorbers in the visible to near-infrared

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Dasol Lee ◽  
Myeongcheol Go ◽  
Minkyung Kim ◽  
Junho Jang ◽  
Chungryong Choi ◽  
...  
Keyword(s):  
Titanium Nitride ◽  
Large Scale ◽  
Near Infrared ◽  
Infrared Region ◽  
Absorption Efficiency ◽  
Perfect Absorber ◽  
Colloidal Lithography ◽  
Perfect Absorption ◽  
Broadband Absorber ◽  
Heat Tolerant

AbstractBroadband perfect absorbers have been intensively researched for decades because of their near-perfect absorption optical property that can be applied to diverse applications. Unfortunately, achieving large-scale and heat-tolerant absorbers has been remained challenging work because of costly and time-consuming lithography methods and thermolability of materials, respectively. Here, we demonstrate a thermally robust titanium nitride broadband absorber with >95% absorption efficiency in the visible and near-infrared region (400–900 nm). A relatively large-scale (2.5 cm × 2.5 cm) absorber device is fabricated by using a fabrication technique of multiple-patterning colloidal lithography. The optical properties of the absorber are still maintained even after heating at the temperatures >600 ∘C. Such a large-scale, heat-tolerant, and broadband near-perfect absorber will provide further useful applications in solar thermophotovoltaics, stealth, and absorption controlling in high-temperature conditions.

scholarly journals A TM-Pass/TE-Stop Polarizer Based on a Surface Plasmon Resonance

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Yuu Wakabayashi ◽  
Junji Yamauchi ◽  
Hisamatsu Nakano
Keyword(s):  
Wavelength Range ◽  
Metal Film ◽  
Oblique Incidence ◽  
Extinction Ratio ◽  
Normal Incidence ◽  
Metal Films ◽  
Range Shifts ◽  
Dielectric Gratings ◽  
Dielectric Grating ◽  
Difference Time

A TM-pass/TE-stop polarizer consisting of a metal film sandwiched between dielectric gratings is investigated using the finite-difference time-domain method. At normal incidence with respect to the grating plane, a transmissivity of more than 94% and a reflectivity of more than 98% are obtained at  m for the TM and TE waves, respectively. The extinction ratio is more than 17 dB over a wavelength range of 1.50 m to 1.75 m. A high extinction ratio is maintained at oblique incidence, although the wavelength range shifts towards longer wavelengths. The TM-pass/TE-stop operation is also achieved with a modified structure, in which a dielectric grating is sandwiched between metal films.

scholarly journals Refractory Ultra-Broadband Perfect Absorber from Visible to Near-Infrared

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1038 ◽  
Author(s):  
Huixuan Gao ◽  
Wei Peng ◽  
Shuwen Chu ◽  
Wenli Cui ◽  
Zhi Liu ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Near Infrared ◽  
Layer Structure ◽  
Incident Angle ◽  
Cavity Resonance ◽  
Perfect Absorber ◽  
Perfect Absorption ◽  
Excellent Thermal Stability ◽  
Broadband Absorption ◽  
The Earth

The spectral range of solar radiation observed on the earth is approximately 295 to 2500 nm. How to widen the absorption band of the plasmonic absorber in this range has become a hot issue in recent years. In this paper, we propose a highly applicable refractory perfect absorber with an elliptical titanium nanodisk array based on a silica–titanium–silica–titanium four-layer structure. Through theoretical design and numerical demonstration, the interaction of surface plasmon resonance with the Fabry–Perot cavity resonance results in high absorption characteristics. Our investigations illustrate that it can achieve ultra-broadband absorption above 90% from a visible 550-nm wavelength to a near-infrared 2200-nm wavelength continuously. In particular, a continuous 712-nm broadband perfect absorption of up to 99% is achieved from wavelengths from 1013 to 1725 nm. The air mass 1.5 solar simulation from a finite-difference time domain demonstrates that this absorber can provide an average absorption rate of 93.26% from wavelengths of 295 to 2500 nm, which can absorb solar radiation efficiently on the earth. Because of the high melting point of Ti material and the symmetrical structure of this device, this perfect absorber has excellent thermal stability, polarization independence, and large incident-angle insensitivity. Hence, it can be used for solar cells, thermal emitters, and infrared detection with further investigation.

Nano-multiwall cylinders array for ultra-broadband perfect absorption in visible regime: novel properties revealing

2014 ◽  
Vol 28 (11) ◽  
pp. 1450086
Author(s):  
Qi Han ◽  
Lei Jin ◽  
Yongqi Fu ◽  
Weixing Yu
Keyword(s):  
Polarization State ◽  
Geometrical Parameters ◽  
Substrate Thickness ◽  
Absorption Property ◽  
Perfect Absorption ◽  
Cylinder Array ◽  
Solar Energy Harvesting ◽  
Incoming Light ◽  
Light Absorption Property ◽  
High Absorption

An extraordinary light absorption property of nano-multiwall cylinder array with a periodic structure is reported. The ultra-high absorption is independent of the incoming light on polarization state and insensitive in a broad angle range. We attribute the efficient light harvesting property of nano-multiwall cylinder array to the leaky-mode resonance. Influence of geometrical parameters of the structure such as wall cylinder height, width, and substrate thickness on absorbing performance is discussed. The proposed absorber will find its application in those areas related to solar energy harvesting.

Reversibly-propagational metamaterial absorber for sensing application

2018 ◽  
Vol 32 (04) ◽  
pp. 1850044 ◽  
Author(s):  
Bui Son Tung ◽  
Bui Xuan Khuyen ◽  
Young Joon Yoo ◽  
Joo Yull Rhee ◽  
Ki Won Kim ◽  
...  
Keyword(s):  
Oblique Incidence ◽  
Geometrical Structure ◽  
Incident Angle ◽  
Metamaterial Absorber ◽  
Perfect Absorber ◽  
Perfect Absorption ◽  
Great Magnitude ◽  
X Band ◽  
Sensing Application ◽  
Metamaterial Perfect Absorber

We investigated a reversibly-propagational metamaterial perfect absorber (MPA) for X band using two separated identically-patterned copper layers, which were deposited on continuous dielectric FR-4 layers. By adjusting oblique incidence, two separated resonances are excited, then come close to each other and is finally merged to be a perfect absorption peak at 10.1 GHz. The nature of resonance is the quadrupole mode instead of the fundamental resonances in common MPAs. The mechanism of perfect absorption is the coupling of two quadrupole resonances at their superposition, leading to an enhancement of energy absorption. Finally, we numerically presented the capability of sensing thin resonant substance using the proposed MPA. The characteristic resonance of substance, which does not appear on the absorption spectrum at the limited thickness of bare substance layer, is detected with a great magnitude of signal by exploiting the absorption resonance of MPA. Our work provides another way to obtain the reversibly-propagational absorption by controlling the incident angle instead of the geometrical structure, and might be useful for the potential devices based on MPA such as detectors and sensors.

Multilayer treatment for subwavelength and broad absorption

2021 ◽  
Vol 263 (4) ◽  
pp. 2219-2227
Author(s):  
Josué Costa Baptista ◽  
Edith Roland-Fotsing ◽  
Jacky Mardjano ◽  
Daniel Therriault ◽  
Annie Ross
Keyword(s):  
Resonance Frequency ◽  
Characteristic Impedance ◽  
Single Layer ◽  
Bottom Layer ◽  
Wave Number ◽  
Perfect Absorption ◽  
Broadband Absorption ◽  
Wave Resonance ◽  
Quarter Wave ◽  
High Absorption

Single layer optimized microchannels (268µm channels size) present high absorption at the quarter-wave resonance frequency (2460Hz for 30mm-thick treatment) but cannot provide significant absorption at lower frequencies. In this work, the absorption coefficient of multilayer treatments with 2, 5, 10- and 30-layers of channels with size varying from 50µm to 15mm was numerically optimized. The equivalent fluid wave number and characteristic impedance of each layer were predicted using the JCAL model. The Double-scale Asymptotic Method (DAM) was used to obtain the JCAL parameters. The multilayer treatment absorption was modelled with the Transfer Matrix Method (TMM). It was shown that multilayer treatments present superior absorption than single layer. For instance, bilayer treatment made of a 1mm-thick top layer (facing incident wave) of channels of 58µm and a 29mm-thick bottom layer of channels with 8.1mm provides perfect absorption around 1200Hz (i.e. 1260Hz below the quarter-wave resonance frequency of 30mm-thick single layer treatment). Alternatively, a 30-layer treatment with channels size varying from 100µm to 9.6mm provides absorption higher than 0.8 between 1350 and 6270Hz (i.e. 54% higher than single layer treatment with same thickness). These results pave the way to the fabrication of new multilayer treatments with interesting subwavelength and broadband absorption capabilities.

scholarly journals Dual-Band Plasmonic Perfect Absorber Based on the Hybrid Halide Perovskite in the Communication Regime

Coatings ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 67
Author(s):  
Liang Xu ◽  
Jian Zeng ◽  
Xin Luo ◽  
Libin Xia ◽  
Zongle Ma ◽  
...  
Keyword(s):  
Structural Parameters ◽  
Wavelength Region ◽  
Dual Band ◽  
Perfect Absorber ◽  
Perfect Absorption ◽  
Band Absorption ◽  
Halide Perovskites ◽  
Fdtd Methods ◽  
Difference Time ◽  
Polarization Correlation

Due to the weak absorption of (CH3NH3)PbI3 in the communication regime, which restricts its optoelectronic applications, we design a adjustable dual-band perfect absorber based on the (CH3NH3)PbI3 to significantly enhance its absorption capability. Since the localized plasmon (LP) mode and surface plasmon (SP) mode are excited in the structure, which can both greatly enhance light absorption of the (CH3NH3)PbI3 layer, dual-band perfect absorption peaks are formed in the communication regime, and the absorption of (CH3NH3)PbI3 layer is increased to 43.1% and 64.2% at the dual-band absorption peaks by using finite-difference time-domain (FDTD) methods, respectively. By varying some key structural parameters, the dual-band absorption peaks of (CH3NH3)PbI3 can be separately shifted in a wide wavelength region. Moreover, the designed absorber can keep good performance under wide angles of incidence and manifested polarization correlation. Furthermore, not just for (CH3NH3)PbI3, the physical mechanism in this absorber can also be utilized to strengthen the absorption of other halide perovskites.

Sign in / Sign up

Export Citation Format

Share Document