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Microscopic Picture of Electron–Phonon Interaction in Two-Dimensional Halide Perovskites
[Image: see text] Perovskites have attracted much attention due to their remarkable optical properties. While it is well established that excitons dominate their optical response, the impact of higher excitonic states and formation of phonon sidebands in optical spectra still need to be better under...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical
Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7735742/ https://www.ncbi.nlm.nih.gov/pubmed/33180499 http://dx.doi.org/10.1021/acs.jpclett.0c02661 |
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author | Feldstein, David Perea-Causín, Raül Wang, Shuli Dyksik, Mateusz Watanabe, Kenji Taniguchi, Takashi Plochocka, Paulina Malic, Ermin |
author_facet | Feldstein, David Perea-Causín, Raül Wang, Shuli Dyksik, Mateusz Watanabe, Kenji Taniguchi, Takashi Plochocka, Paulina Malic, Ermin |
author_sort | Feldstein, David |
collection | PubMed |
description | [Image: see text] Perovskites have attracted much attention due to their remarkable optical properties. While it is well established that excitons dominate their optical response, the impact of higher excitonic states and formation of phonon sidebands in optical spectra still need to be better understood. Here, we perform a theoretical study of excitonic properties of monolayered hybrid organic perovskites—supported by temperature-dependent photoluminescence measurements. Solving the Wannier equation, we obtain microscopic access to the Rydberg-like series of excitonic states including their wave functions and binding energies. Exploiting the generalized Elliot formula, we calculate the photoluminescence spectra demonstrating a pronounced contribution of a phonon sideband for temperatures up to 50 K, in agreement with experimental measurements. Finally, we predict temperature-dependent line widths of the three energetically lowest excitonic transitions and identify the underlying phonon-driven scattering processes. |
format | Online Article Text |
id | pubmed-7735742 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical
Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-77357422020-12-15 Microscopic Picture of Electron–Phonon Interaction in Two-Dimensional Halide Perovskites Feldstein, David Perea-Causín, Raül Wang, Shuli Dyksik, Mateusz Watanabe, Kenji Taniguchi, Takashi Plochocka, Paulina Malic, Ermin J Phys Chem Lett [Image: see text] Perovskites have attracted much attention due to their remarkable optical properties. While it is well established that excitons dominate their optical response, the impact of higher excitonic states and formation of phonon sidebands in optical spectra still need to be better understood. Here, we perform a theoretical study of excitonic properties of monolayered hybrid organic perovskites—supported by temperature-dependent photoluminescence measurements. Solving the Wannier equation, we obtain microscopic access to the Rydberg-like series of excitonic states including their wave functions and binding energies. Exploiting the generalized Elliot formula, we calculate the photoluminescence spectra demonstrating a pronounced contribution of a phonon sideband for temperatures up to 50 K, in agreement with experimental measurements. Finally, we predict temperature-dependent line widths of the three energetically lowest excitonic transitions and identify the underlying phonon-driven scattering processes. American Chemical Society 2020-11-12 2020-12-03 /pmc/articles/PMC7735742/ /pubmed/33180499 http://dx.doi.org/10.1021/acs.jpclett.0c02661 Text en © 2020 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
spellingShingle | Feldstein, David Perea-Causín, Raül Wang, Shuli Dyksik, Mateusz Watanabe, Kenji Taniguchi, Takashi Plochocka, Paulina Malic, Ermin Microscopic Picture of Electron–Phonon Interaction in Two-Dimensional Halide Perovskites |
title | Microscopic Picture of Electron–Phonon Interaction
in Two-Dimensional Halide Perovskites |
title_full | Microscopic Picture of Electron–Phonon Interaction
in Two-Dimensional Halide Perovskites |
title_fullStr | Microscopic Picture of Electron–Phonon Interaction
in Two-Dimensional Halide Perovskites |
title_full_unstemmed | Microscopic Picture of Electron–Phonon Interaction
in Two-Dimensional Halide Perovskites |
title_short | Microscopic Picture of Electron–Phonon Interaction
in Two-Dimensional Halide Perovskites |
title_sort | microscopic picture of electron–phonon interaction
in two-dimensional halide perovskites |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7735742/ https://www.ncbi.nlm.nih.gov/pubmed/33180499 http://dx.doi.org/10.1021/acs.jpclett.0c02661 |
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