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Raman scattering excitation spectroscopy of monolayer WS(2)
Resonant Raman scattering is investigated in monolayer WS(2) at low temperature with the aid of an unconventional technique, i.e., Raman scattering excitation (RSE) spectroscopy. The RSE spectrum is made up by sweeping the excitation energy, when the detection energy is fixed in resonance with excit...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5505977/ https://www.ncbi.nlm.nih.gov/pubmed/28698679 http://dx.doi.org/10.1038/s41598-017-05367-0 |
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author | Molas, Maciej R. Nogajewski, Karol Potemski, Marek Babiński, Adam |
author_facet | Molas, Maciej R. Nogajewski, Karol Potemski, Marek Babiński, Adam |
author_sort | Molas, Maciej R. |
collection | PubMed |
description | Resonant Raman scattering is investigated in monolayer WS(2) at low temperature with the aid of an unconventional technique, i.e., Raman scattering excitation (RSE) spectroscopy. The RSE spectrum is made up by sweeping the excitation energy, when the detection energy is fixed in resonance with excitonic transitions related to either neutral or charged excitons. We demonstrate that the shape of the RSE spectrum strongly depends on the selected detection energy. The resonance of outgoing light with the neutral exciton leads to an extremely rich RSE spectrum, which displays several Raman scattering features not reported so far, while no clear effect on the associated background photoluminescence is observed. Instead, when the outgoing photons resonate with the negatively charged exciton, a strong enhancement of the related emission occurs. Presented results show that the RSE spectroscopy can be a useful technique to study electron-phonon interactions in thin layers of transition metal dichalcogenides. |
format | Online Article Text |
id | pubmed-5505977 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-55059772017-07-13 Raman scattering excitation spectroscopy of monolayer WS(2) Molas, Maciej R. Nogajewski, Karol Potemski, Marek Babiński, Adam Sci Rep Article Resonant Raman scattering is investigated in monolayer WS(2) at low temperature with the aid of an unconventional technique, i.e., Raman scattering excitation (RSE) spectroscopy. The RSE spectrum is made up by sweeping the excitation energy, when the detection energy is fixed in resonance with excitonic transitions related to either neutral or charged excitons. We demonstrate that the shape of the RSE spectrum strongly depends on the selected detection energy. The resonance of outgoing light with the neutral exciton leads to an extremely rich RSE spectrum, which displays several Raman scattering features not reported so far, while no clear effect on the associated background photoluminescence is observed. Instead, when the outgoing photons resonate with the negatively charged exciton, a strong enhancement of the related emission occurs. Presented results show that the RSE spectroscopy can be a useful technique to study electron-phonon interactions in thin layers of transition metal dichalcogenides. Nature Publishing Group UK 2017-07-11 /pmc/articles/PMC5505977/ /pubmed/28698679 http://dx.doi.org/10.1038/s41598-017-05367-0 Text en © The Author(s) 2017 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 Molas, Maciej R. Nogajewski, Karol Potemski, Marek Babiński, Adam Raman scattering excitation spectroscopy of monolayer WS(2) |
title | Raman scattering excitation spectroscopy of monolayer WS(2) |
title_full | Raman scattering excitation spectroscopy of monolayer WS(2) |
title_fullStr | Raman scattering excitation spectroscopy of monolayer WS(2) |
title_full_unstemmed | Raman scattering excitation spectroscopy of monolayer WS(2) |
title_short | Raman scattering excitation spectroscopy of monolayer WS(2) |
title_sort | raman scattering excitation spectroscopy of monolayer ws(2) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5505977/ https://www.ncbi.nlm.nih.gov/pubmed/28698679 http://dx.doi.org/10.1038/s41598-017-05367-0 |
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