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Angle-selective perfect absorption with two-dimensional materials

Two-dimensional (2D) materials have great potential in photonic and optoelectronic devices. However, the relatively weak light absorption in 2D materials hinders their application in practical devices. Here, we propose a general approach to achieve angle-selective perfect light absorption in 2D mate...

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Detalles Bibliográficos
Autores principales: Zhu, Linxiao, Liu, Fengyuan, Lin, Hongtao, Hu, Juejun, Yu, Zongfu, Wang, Xinran, Fan, Shanhui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6059899/
https://www.ncbi.nlm.nih.gov/pubmed/30167153
http://dx.doi.org/10.1038/lsa.2016.52
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author Zhu, Linxiao
Liu, Fengyuan
Lin, Hongtao
Hu, Juejun
Yu, Zongfu
Wang, Xinran
Fan, Shanhui
author_facet Zhu, Linxiao
Liu, Fengyuan
Lin, Hongtao
Hu, Juejun
Yu, Zongfu
Wang, Xinran
Fan, Shanhui
author_sort Zhu, Linxiao
collection PubMed
description Two-dimensional (2D) materials have great potential in photonic and optoelectronic devices. However, the relatively weak light absorption in 2D materials hinders their application in practical devices. Here, we propose a general approach to achieve angle-selective perfect light absorption in 2D materials. As a demonstration of the concept, we experimentally show giant light absorption by placing large-area single-layer graphene on a structure consisting of a chalcogenide layer atop a mirror and achieving a total absorption of 77.6% in the mid-infrared wavelength range (~13 μm), where the graphene contributes a record-high 47.2% absorptivity of mid-infrared light. Construction of such an angle-selective thin optical element is important for solar and thermal energy harvesting, photo-detection and sensing applications. Our study points to a new opportunity to combine 2D materials with photonic structures to enable novel device applications.
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spelling pubmed-60598992018-08-30 Angle-selective perfect absorption with two-dimensional materials Zhu, Linxiao Liu, Fengyuan Lin, Hongtao Hu, Juejun Yu, Zongfu Wang, Xinran Fan, Shanhui Light Sci Appl Original Article Two-dimensional (2D) materials have great potential in photonic and optoelectronic devices. However, the relatively weak light absorption in 2D materials hinders their application in practical devices. Here, we propose a general approach to achieve angle-selective perfect light absorption in 2D materials. As a demonstration of the concept, we experimentally show giant light absorption by placing large-area single-layer graphene on a structure consisting of a chalcogenide layer atop a mirror and achieving a total absorption of 77.6% in the mid-infrared wavelength range (~13 μm), where the graphene contributes a record-high 47.2% absorptivity of mid-infrared light. Construction of such an angle-selective thin optical element is important for solar and thermal energy harvesting, photo-detection and sensing applications. Our study points to a new opportunity to combine 2D materials with photonic structures to enable novel device applications. Nature Publishing Group 2016-03-25 /pmc/articles/PMC6059899/ /pubmed/30167153 http://dx.doi.org/10.1038/lsa.2016.52 Text en Copyright © 2016 Changchun Institute of Optics, Fine Mechanics and Physics http://creativecommons.org/licenses/by-nc-sa/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/
spellingShingle Original Article
Zhu, Linxiao
Liu, Fengyuan
Lin, Hongtao
Hu, Juejun
Yu, Zongfu
Wang, Xinran
Fan, Shanhui
Angle-selective perfect absorption with two-dimensional materials
title Angle-selective perfect absorption with two-dimensional materials
title_full Angle-selective perfect absorption with two-dimensional materials
title_fullStr Angle-selective perfect absorption with two-dimensional materials
title_full_unstemmed Angle-selective perfect absorption with two-dimensional materials
title_short Angle-selective perfect absorption with two-dimensional materials
title_sort angle-selective perfect absorption with two-dimensional materials
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6059899/
https://www.ncbi.nlm.nih.gov/pubmed/30167153
http://dx.doi.org/10.1038/lsa.2016.52
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