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

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 t...

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Detalles Bibliográficos
Autores principales: Gao, Huixuan, Peng, Wei, Chu, Shuwen, Cui, Wenli, Liu, Zhi, Yu, Li, Jing, Zhenguo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6315645/
https://www.ncbi.nlm.nih.gov/pubmed/30545120
http://dx.doi.org/10.3390/nano8121038
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author Gao, Huixuan
Peng, Wei
Chu, Shuwen
Cui, Wenli
Liu, Zhi
Yu, Li
Jing, Zhenguo
author_facet Gao, Huixuan
Peng, Wei
Chu, Shuwen
Cui, Wenli
Liu, Zhi
Yu, Li
Jing, Zhenguo
author_sort Gao, Huixuan
collection PubMed
description 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.
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spelling pubmed-63156452019-01-10 Refractory Ultra-Broadband Perfect Absorber from Visible to Near-Infrared Gao, Huixuan Peng, Wei Chu, Shuwen Cui, Wenli Liu, Zhi Yu, Li Jing, Zhenguo Nanomaterials (Basel) Letter 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. MDPI 2018-12-12 /pmc/articles/PMC6315645/ /pubmed/30545120 http://dx.doi.org/10.3390/nano8121038 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Letter
Gao, Huixuan
Peng, Wei
Chu, Shuwen
Cui, Wenli
Liu, Zhi
Yu, Li
Jing, Zhenguo
Refractory Ultra-Broadband Perfect Absorber from Visible to Near-Infrared
title Refractory Ultra-Broadband Perfect Absorber from Visible to Near-Infrared
title_full Refractory Ultra-Broadband Perfect Absorber from Visible to Near-Infrared
title_fullStr Refractory Ultra-Broadband Perfect Absorber from Visible to Near-Infrared
title_full_unstemmed Refractory Ultra-Broadband Perfect Absorber from Visible to Near-Infrared
title_short Refractory Ultra-Broadband Perfect Absorber from Visible to Near-Infrared
title_sort refractory ultra-broadband perfect absorber from visible to near-infrared
topic Letter
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6315645/
https://www.ncbi.nlm.nih.gov/pubmed/30545120
http://dx.doi.org/10.3390/nano8121038
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