Cooperative Effects in the Photoluminescence of (In,Ga)As/GaAs Quantum Dot Chain Structures

Multilayer In(0.4)Ga(0.6)As/GaAs quantum dot (QD) chain samples are investigated by means of cw and time-resolved photoluminescence (PL) spectroscopy in order to study the peculiarities of interdot coupling in such nanostructures. The temperature dependence of the PL has revealed details of the conf...

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Autores principales: Mazur, Yu I, Dorogan, VG, Marega, E, Cesar, DF, Lopez-Richard, V, Marques, GE, Zhuchenko, Z Ya., Tarasov, GG, Salamo, GJ
Formato: Texto
Lenguaje:English
Publicado: Springer 2010
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2894340/
https://www.ncbi.nlm.nih.gov/pubmed/20672035
http://dx.doi.org/10.1007/s11671-010-9590-5
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author Mazur, Yu I
Dorogan, VG
Marega, E
Cesar, DF
Lopez-Richard, V
Marques, GE
Zhuchenko, Z Ya.
Tarasov, GG
Salamo, GJ
author_facet Mazur, Yu I
Dorogan, VG
Marega, E
Cesar, DF
Lopez-Richard, V
Marques, GE
Zhuchenko, Z Ya.
Tarasov, GG
Salamo, GJ
author_sort Mazur, Yu I
collection PubMed
description Multilayer In(0.4)Ga(0.6)As/GaAs quantum dot (QD) chain samples are investigated by means of cw and time-resolved photoluminescence (PL) spectroscopy in order to study the peculiarities of interdot coupling in such nanostructures. The temperature dependence of the PL has revealed details of the confinement. Non-thermal carrier distribution through in-chain, interdot wave function coupling is found. The peculiar dependences of the PL decay time on the excitation and detection energies are ascribed to the electronic interdot coupling and the long-range coupling through the radiation field. It is shown that the dependence of the PL decay time on the excitation wavelength is a result of the superradiance effect.
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spelling pubmed-28943402010-07-28 Cooperative Effects in the Photoluminescence of (In,Ga)As/GaAs Quantum Dot Chain Structures Mazur, Yu I Dorogan, VG Marega, E Cesar, DF Lopez-Richard, V Marques, GE Zhuchenko, Z Ya. Tarasov, GG Salamo, GJ Nanoscale Res Lett Nano Express Multilayer In(0.4)Ga(0.6)As/GaAs quantum dot (QD) chain samples are investigated by means of cw and time-resolved photoluminescence (PL) spectroscopy in order to study the peculiarities of interdot coupling in such nanostructures. The temperature dependence of the PL has revealed details of the confinement. Non-thermal carrier distribution through in-chain, interdot wave function coupling is found. The peculiar dependences of the PL decay time on the excitation and detection energies are ascribed to the electronic interdot coupling and the long-range coupling through the radiation field. It is shown that the dependence of the PL decay time on the excitation wavelength is a result of the superradiance effect. Springer 2010-04-16 /pmc/articles/PMC2894340/ /pubmed/20672035 http://dx.doi.org/10.1007/s11671-010-9590-5 Text en Copyright © 2010 The Author(s) https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Nano Express
Mazur, Yu I
Dorogan, VG
Marega, E
Cesar, DF
Lopez-Richard, V
Marques, GE
Zhuchenko, Z Ya.
Tarasov, GG
Salamo, GJ
Cooperative Effects in the Photoluminescence of (In,Ga)As/GaAs Quantum Dot Chain Structures
title Cooperative Effects in the Photoluminescence of (In,Ga)As/GaAs Quantum Dot Chain Structures
title_full Cooperative Effects in the Photoluminescence of (In,Ga)As/GaAs Quantum Dot Chain Structures
title_fullStr Cooperative Effects in the Photoluminescence of (In,Ga)As/GaAs Quantum Dot Chain Structures
title_full_unstemmed Cooperative Effects in the Photoluminescence of (In,Ga)As/GaAs Quantum Dot Chain Structures
title_short Cooperative Effects in the Photoluminescence of (In,Ga)As/GaAs Quantum Dot Chain Structures
title_sort cooperative effects in the photoluminescence of (in,ga)as/gaas quantum dot chain structures
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2894340/
https://www.ncbi.nlm.nih.gov/pubmed/20672035
http://dx.doi.org/10.1007/s11671-010-9590-5
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