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Direct observation of ultrafast plasmonic hot electron transfer in the strong coupling regime

Achieving strong coupling between plasmonic oscillators can significantly modulate their intrinsic optical properties. Here, we report the direct observation of ultrafast plasmonic hot electron transfer from an Au grating array to an MoS(2) monolayer in the strong coupling regime between localized s...

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Autores principales: Shan, Hangyong, Yu, Ying, Wang, Xingli, Luo, Yang, Zu, Shuai, Du, Bowen, Han, Tianyang, Li, Bowen, Li, Yu, Wu, Jiarui, Lin, Feng, Shi, Kebin, Tay, Beng Kang, Liu, Zheng, Zhu, Xing, Fang, Zheyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6333624/
https://www.ncbi.nlm.nih.gov/pubmed/30651984
http://dx.doi.org/10.1038/s41377-019-0121-6
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author Shan, Hangyong
Yu, Ying
Wang, Xingli
Luo, Yang
Zu, Shuai
Du, Bowen
Han, Tianyang
Li, Bowen
Li, Yu
Wu, Jiarui
Lin, Feng
Shi, Kebin
Tay, Beng Kang
Liu, Zheng
Zhu, Xing
Fang, Zheyu
author_facet Shan, Hangyong
Yu, Ying
Wang, Xingli
Luo, Yang
Zu, Shuai
Du, Bowen
Han, Tianyang
Li, Bowen
Li, Yu
Wu, Jiarui
Lin, Feng
Shi, Kebin
Tay, Beng Kang
Liu, Zheng
Zhu, Xing
Fang, Zheyu
author_sort Shan, Hangyong
collection PubMed
description Achieving strong coupling between plasmonic oscillators can significantly modulate their intrinsic optical properties. Here, we report the direct observation of ultrafast plasmonic hot electron transfer from an Au grating array to an MoS(2) monolayer in the strong coupling regime between localized surface plasmons (LSPs) and surface plasmon polaritons (SPPs). By means of femtosecond pump-probe spectroscopy, the measured hot electron transfer time is approximately 40 fs with a maximum external quantum yield of 1.65%. Our results suggest that strong coupling between LSPs and SPPs has synergetic effects on the generation of plasmonic hot carriers, where SPPs with a unique nonradiative feature can act as an ‘energy recycle bin’ to reuse the radiative energy of LSPs and contribute to hot carrier generation. Coherent energy exchange between plasmonic modes in the strong coupling regime can further enhance the vertical electric field and promote the transfer of hot electrons between the Au grating and the MoS(2) monolayer. Our proposed plasmonic strong coupling configuration overcomes the challenge associated with utilizing hot carriers and is instructive in terms of improving the performance of plasmonic opto-electronic devices.
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spelling pubmed-63336242019-01-16 Direct observation of ultrafast plasmonic hot electron transfer in the strong coupling regime Shan, Hangyong Yu, Ying Wang, Xingli Luo, Yang Zu, Shuai Du, Bowen Han, Tianyang Li, Bowen Li, Yu Wu, Jiarui Lin, Feng Shi, Kebin Tay, Beng Kang Liu, Zheng Zhu, Xing Fang, Zheyu Light Sci Appl Article Achieving strong coupling between plasmonic oscillators can significantly modulate their intrinsic optical properties. Here, we report the direct observation of ultrafast plasmonic hot electron transfer from an Au grating array to an MoS(2) monolayer in the strong coupling regime between localized surface plasmons (LSPs) and surface plasmon polaritons (SPPs). By means of femtosecond pump-probe spectroscopy, the measured hot electron transfer time is approximately 40 fs with a maximum external quantum yield of 1.65%. Our results suggest that strong coupling between LSPs and SPPs has synergetic effects on the generation of plasmonic hot carriers, where SPPs with a unique nonradiative feature can act as an ‘energy recycle bin’ to reuse the radiative energy of LSPs and contribute to hot carrier generation. Coherent energy exchange between plasmonic modes in the strong coupling regime can further enhance the vertical electric field and promote the transfer of hot electrons between the Au grating and the MoS(2) monolayer. Our proposed plasmonic strong coupling configuration overcomes the challenge associated with utilizing hot carriers and is instructive in terms of improving the performance of plasmonic opto-electronic devices. Nature Publishing Group UK 2019-01-16 /pmc/articles/PMC6333624/ /pubmed/30651984 http://dx.doi.org/10.1038/s41377-019-0121-6 Text en © The Author(s) 2019 Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Shan, Hangyong
Yu, Ying
Wang, Xingli
Luo, Yang
Zu, Shuai
Du, Bowen
Han, Tianyang
Li, Bowen
Li, Yu
Wu, Jiarui
Lin, Feng
Shi, Kebin
Tay, Beng Kang
Liu, Zheng
Zhu, Xing
Fang, Zheyu
Direct observation of ultrafast plasmonic hot electron transfer in the strong coupling regime
title Direct observation of ultrafast plasmonic hot electron transfer in the strong coupling regime
title_full Direct observation of ultrafast plasmonic hot electron transfer in the strong coupling regime
title_fullStr Direct observation of ultrafast plasmonic hot electron transfer in the strong coupling regime
title_full_unstemmed Direct observation of ultrafast plasmonic hot electron transfer in the strong coupling regime
title_short Direct observation of ultrafast plasmonic hot electron transfer in the strong coupling regime
title_sort direct observation of ultrafast plasmonic hot electron transfer in the strong coupling regime
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6333624/
https://www.ncbi.nlm.nih.gov/pubmed/30651984
http://dx.doi.org/10.1038/s41377-019-0121-6
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