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Broadband long-wave infrared high-absorption of active materials through hybrid plasmonic resonance modes

Broadband high absorption of long-wavelength infrared light for rough submicron active material films is quite challenging to achieve. Unlike conventional infrared detection units, with over three-layer complex structures, a three-layer metamaterial with mercury cadmium telluride (MCT) film sandwich...

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Autores principales: Liu, Xianchao, Zhang, Zhiheng, Han, Chao, Wu, Jiang, Zhang, Xingchao, Zhou, Hongxi, Xie, Qian, Wang, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9995633/
https://www.ncbi.nlm.nih.gov/pubmed/36884144
http://dx.doi.org/10.1186/s11671-023-03817-5
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author Liu, Xianchao
Zhang, Zhiheng
Han, Chao
Wu, Jiang
Zhang, Xingchao
Zhou, Hongxi
Xie, Qian
Wang, Jun
author_facet Liu, Xianchao
Zhang, Zhiheng
Han, Chao
Wu, Jiang
Zhang, Xingchao
Zhou, Hongxi
Xie, Qian
Wang, Jun
author_sort Liu, Xianchao
collection PubMed
description Broadband high absorption of long-wavelength infrared light for rough submicron active material films is quite challenging to achieve. Unlike conventional infrared detection units, with over three-layer complex structures, a three-layer metamaterial with mercury cadmium telluride (MCT) film sandwiched between an Au cuboid array and Au mirror is studied through theory and simulations. The results show that propagated/localized surface plasmon resonance simultaneously contribute to broadband absorption under the TM wave of the absorber, while the Fabry–Perot (FP) cavity resonance causes absorption of the TE wave. As surface plasmon resonance concentrates most of the TM wave on the MCT film, 74% of the incident light energy is absorbed by the submicron thickness MCT film within the 8–12 μm waveband, which is approximately 10 times than that of the rough same thickness MCT film. In addition, by replacing the Au mirror with Au grating, the FP cavity along the y-axis direction was destroyed, and the absorber exhibited excellent polarization-sensitive and incident angle-insensitive properties. For the corresponding conceived metamaterial photodetector, as carrier transit time across the gap between Au cuboid is much less than that of other paths, the Au cuboids simultaneously act as microelectrodes to collect photocarriers generated in the gap. Thus the light absorption and photocarrier collection efficiency are hopefully improved simultaneously. Finally, the density of the Au cuboids is increased by adding the same arranged cuboids perpendicular to the original direction on the top surface or by replacing the cuboids with crisscross, which results in broadband polarization-insensitive high absorption by the absorber.
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spelling pubmed-99956332023-03-10 Broadband long-wave infrared high-absorption of active materials through hybrid plasmonic resonance modes Liu, Xianchao Zhang, Zhiheng Han, Chao Wu, Jiang Zhang, Xingchao Zhou, Hongxi Xie, Qian Wang, Jun Discov Nano Research Broadband high absorption of long-wavelength infrared light for rough submicron active material films is quite challenging to achieve. Unlike conventional infrared detection units, with over three-layer complex structures, a three-layer metamaterial with mercury cadmium telluride (MCT) film sandwiched between an Au cuboid array and Au mirror is studied through theory and simulations. The results show that propagated/localized surface plasmon resonance simultaneously contribute to broadband absorption under the TM wave of the absorber, while the Fabry–Perot (FP) cavity resonance causes absorption of the TE wave. As surface plasmon resonance concentrates most of the TM wave on the MCT film, 74% of the incident light energy is absorbed by the submicron thickness MCT film within the 8–12 μm waveband, which is approximately 10 times than that of the rough same thickness MCT film. In addition, by replacing the Au mirror with Au grating, the FP cavity along the y-axis direction was destroyed, and the absorber exhibited excellent polarization-sensitive and incident angle-insensitive properties. For the corresponding conceived metamaterial photodetector, as carrier transit time across the gap between Au cuboid is much less than that of other paths, the Au cuboids simultaneously act as microelectrodes to collect photocarriers generated in the gap. Thus the light absorption and photocarrier collection efficiency are hopefully improved simultaneously. Finally, the density of the Au cuboids is increased by adding the same arranged cuboids perpendicular to the original direction on the top surface or by replacing the cuboids with crisscross, which results in broadband polarization-insensitive high absorption by the absorber. Springer US 2023-03-08 /pmc/articles/PMC9995633/ /pubmed/36884144 http://dx.doi.org/10.1186/s11671-023-03817-5 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research
Liu, Xianchao
Zhang, Zhiheng
Han, Chao
Wu, Jiang
Zhang, Xingchao
Zhou, Hongxi
Xie, Qian
Wang, Jun
Broadband long-wave infrared high-absorption of active materials through hybrid plasmonic resonance modes
title Broadband long-wave infrared high-absorption of active materials through hybrid plasmonic resonance modes
title_full Broadband long-wave infrared high-absorption of active materials through hybrid plasmonic resonance modes
title_fullStr Broadband long-wave infrared high-absorption of active materials through hybrid plasmonic resonance modes
title_full_unstemmed Broadband long-wave infrared high-absorption of active materials through hybrid plasmonic resonance modes
title_short Broadband long-wave infrared high-absorption of active materials through hybrid plasmonic resonance modes
title_sort broadband long-wave infrared high-absorption of active materials through hybrid plasmonic resonance modes
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9995633/
https://www.ncbi.nlm.nih.gov/pubmed/36884144
http://dx.doi.org/10.1186/s11671-023-03817-5
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