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Indium Tin Oxide Broadband Metasurface Absorber

Journal Article · · ACS Photonics

Metamaterials have been designed to achieve a wide range of functionalities. Metamaterial absorbers are of particular interest for various applications such as infrared detectors, emissivity coatings, and photovoltaic cells. Various metamaterial platforms have been demonstrated to achieve perfect absorption and several attempts have been made to extend the absorption bandwidth of such devices. We demonstrate a broadband infrared absorber using an asymmetric Fabry–Perot cavity consisting of a monolithically fabricated two-layer metasurface. Superoctave optical absorption is achieved by tailoring the structure of the metasurface layers and the thickness of the cavity. Furthermore, the device yields absorptance of over 80% from λ = 4–16 μm, while maintaining the performance over a wide range of incident angles. In contrast to most metamaterial absorbers, our metasurface layers are made of customized indium tin oxide (ITO), conferring the advantage of CMOS compatibility compared to previous approaches using noble metals.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0012704
OSTI ID:
1487247
Report Number(s):
BNL--209747-2018-JAAM
Journal Information:
ACS Photonics, Journal Name: ACS Photonics Journal Issue: 9 Vol. 5; ISSN 2330-4022
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (7)

Elimination of Unwanted Modes in Wavelength-Selective Uncooled Infrared Sensors with Plasmonic Metamaterial Absorbers using a Subtraction Operation journal September 2019
Photonic Metamaterial Absorbers: Morphology Engineering and Interdisciplinary Applications journal September 2019
Near-zero-index materials for photonics journal September 2019
Biomimetic ultra-broadband perfect absorbers optimised with reinforcement learning journal January 2020
An optical-transparent metamaterial for high-efficiency microwave absorption and low infrared emission journal January 2020
Selective thermal emitters with infrared plasmonic indium tin oxide working in the atmosphere journal January 2019
A Co-Polarization Broadband Radar Absorber for RCS Reduction journal September 2018

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