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Study of the Electron-Phonon Coupling in PbS/MnTe Quantum Dots Based on Temperature-Dependent Photoluminescence

The temperature dependence of photoluminescence (PL) emission is a valuable tool for investigating carrier localization, recombination, and carrier–phonon interactions. Herein, electron–phonon couplings in lead sulfide (PbS) quantum dots (QDs) and lead sulfide/manganese tellurite (PbS/MnTe) QDs is r...

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Autores principales: Halim, Nur Diyana, Zaini, Muhammad Safwan, Talib, Zainal Abidin, Liew, Josephine Ying Chyi, Kamarudin, Mazliana Ahmad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8952767/
https://www.ncbi.nlm.nih.gov/pubmed/35334735
http://dx.doi.org/10.3390/mi13030443
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author Halim, Nur Diyana
Zaini, Muhammad Safwan
Talib, Zainal Abidin
Liew, Josephine Ying Chyi
Kamarudin, Mazliana Ahmad
author_facet Halim, Nur Diyana
Zaini, Muhammad Safwan
Talib, Zainal Abidin
Liew, Josephine Ying Chyi
Kamarudin, Mazliana Ahmad
author_sort Halim, Nur Diyana
collection PubMed
description The temperature dependence of photoluminescence (PL) emission is a valuable tool for investigating carrier localization, recombination, and carrier–phonon interactions. Herein, electron–phonon couplings in lead sulfide (PbS) quantum dots (QDs) and lead sulfide/manganese tellurite (PbS/MnTe) QDs is reported. The effect of temperature on the PL emission of PbS and PbS/MnTe was explored within a temperature range of 10 to 300 K. When temperature increased, PL emission was blue-shifted due to the confinement effect. The gradual broadening of the full width at half maximum (FWHM) with increasing temperature indicates electron–phonon interactions. An analysis based on the Boson model revealed that the values of the exciton acoustic phonon coupling coefficient, σ, and temperature-dependent linewidth, γ, for PbS/MnTe were larger than those for PbS, indicating stronger exciton longitudinal-optical–phonon coupling in the compound structure.
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spelling pubmed-89527672022-03-26 Study of the Electron-Phonon Coupling in PbS/MnTe Quantum Dots Based on Temperature-Dependent Photoluminescence Halim, Nur Diyana Zaini, Muhammad Safwan Talib, Zainal Abidin Liew, Josephine Ying Chyi Kamarudin, Mazliana Ahmad Micromachines (Basel) Article The temperature dependence of photoluminescence (PL) emission is a valuable tool for investigating carrier localization, recombination, and carrier–phonon interactions. Herein, electron–phonon couplings in lead sulfide (PbS) quantum dots (QDs) and lead sulfide/manganese tellurite (PbS/MnTe) QDs is reported. The effect of temperature on the PL emission of PbS and PbS/MnTe was explored within a temperature range of 10 to 300 K. When temperature increased, PL emission was blue-shifted due to the confinement effect. The gradual broadening of the full width at half maximum (FWHM) with increasing temperature indicates electron–phonon interactions. An analysis based on the Boson model revealed that the values of the exciton acoustic phonon coupling coefficient, σ, and temperature-dependent linewidth, γ, for PbS/MnTe were larger than those for PbS, indicating stronger exciton longitudinal-optical–phonon coupling in the compound structure. MDPI 2022-03-15 /pmc/articles/PMC8952767/ /pubmed/35334735 http://dx.doi.org/10.3390/mi13030443 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Halim, Nur Diyana
Zaini, Muhammad Safwan
Talib, Zainal Abidin
Liew, Josephine Ying Chyi
Kamarudin, Mazliana Ahmad
Study of the Electron-Phonon Coupling in PbS/MnTe Quantum Dots Based on Temperature-Dependent Photoluminescence
title Study of the Electron-Phonon Coupling in PbS/MnTe Quantum Dots Based on Temperature-Dependent Photoluminescence
title_full Study of the Electron-Phonon Coupling in PbS/MnTe Quantum Dots Based on Temperature-Dependent Photoluminescence
title_fullStr Study of the Electron-Phonon Coupling in PbS/MnTe Quantum Dots Based on Temperature-Dependent Photoluminescence
title_full_unstemmed Study of the Electron-Phonon Coupling in PbS/MnTe Quantum Dots Based on Temperature-Dependent Photoluminescence
title_short Study of the Electron-Phonon Coupling in PbS/MnTe Quantum Dots Based on Temperature-Dependent Photoluminescence
title_sort study of the electron-phonon coupling in pbs/mnte quantum dots based on temperature-dependent photoluminescence
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8952767/
https://www.ncbi.nlm.nih.gov/pubmed/35334735
http://dx.doi.org/10.3390/mi13030443
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