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Journal of Nanophotonics

Design of an ultra-broadband and polarization-insensitive solar absorber using a circular-shaped ring resonator
Author(s): Dan Hu; Hong-Yan Wang; Qiao-Fen Zhu
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Paper Abstract

An ultra-broadband and polarization-independent metamaterial absorber consisting of a chromium circular-shaped ring resonator embedded in a dielectric layer and a chromium ground plane is numerically investigated in the solar spectrum. Simulation results show that the absorber can obtain the average absorption of 95.5% over most the solar spectrum, near-infrared, and short-wavelength infrared regime (400 to 2500 nm). The absorption mechanism of the ultra-broadband metamaterial absorber originates from the overlapping of two different resonance wavelengths. In particular, the electromagnetic energy is almost completely dissipated in the chromium layer, which makes it independent on the loss of the dielectric layer and widens the range of choices for potential dielectric materials. Our designed absorber has high practical feasibility and appears to be very promising for solar energy harvesting, thermal imaging, and emissivity control applications.

Paper Details

Date Published: 23 May 2016
PDF: 9 pages
J. Nanophoton. 10(2) 026021 doi: 10.1117/1.JNP.10.026021
Published in: Journal of Nanophotonics Volume 10, Issue 2
Show Author Affiliations
Dan Hu, Anyang Normal University (China)
Hong-Yan Wang, Anyang Normal Univ. (China)
Qiao-Fen Zhu, Hebei Univ. of Engineering (China)

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