In:
Journal of the Optical Society of America B, Optica Publishing Group, Vol. 37, No. 7 ( 2020-07-01), p. 2163-
Abstract:
Solar absorbers are designed for absorbing visible, infrared, and ultraviolet frequencies. Most of the absorbers designed so far have been for absorbing visible frequencies, and there is a strong need for designing infrared absorbers and ultraviolet absorbers. We present a broadband near-infrared absorber using metamaterial gold resonators. The gold resonators are uniformly placed over the S i O 2 substrate in different patterns. All of these patterns’ solar absorbers are analyzed, and the results are presented in the form of reflection, transmission, absorption, electric field, permittivity, permeability, and refractive index. The parameter physical size is also varied, and results are observed in terms of reflection, absorption, and transmission. The optimized design is also obtained by analyzing all the design results. Comparative tables are also presented for all of these designs. The results are obtained for the near-infrared frequency range of 155 THz to 425 THz. The proposed uniform metamaterial absorber is applicable in photovoltaic applications and energy harvesting applications.
Type of Medium:
Online Resource
ISSN:
0740-3224
,
1520-8540
DOI:
10.1364/JOSAB.389283
Language:
English
Publisher:
Optica Publishing Group
Publication Date:
2020
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