Spectral and dynamical characterization of multiexciton complexes in CdSe/CdS/CdZnS colloidal quantum dots

The kinetics of a strongly nonequilibrium state of electrons and holes excited in quantum dots by a long laser pulse in the p-states are studied using time-resolved photoluminescence. Three bands of the transient photoluminescence spectra are identified, and the ignition and decay of each of them is...

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Autores principales:	Pavlenco, Vladimir, Belousov, Igor, Dobîndă, Igor, Ozol, Dmitry
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2019
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/92023b8f76514189b9ed5d657ea45722
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spelling	oai:doaj.org-article:92023b8f76514189b9ed5d657ea457222021-11-21T11:55:51ZSpectral and dynamical characterization of multiexciton complexes in CdSe/CdS/CdZnS colloidal quantum dots538.9752537-63651810-648Xhttps://doaj.org/article/92023b8f76514189b9ed5d657ea457222019-12-01T00:00:00Zhttps://mjps.nanotech.md/archive/2019/article/98976https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365The kinetics of a strongly nonequilibrium state of electrons and holes excited in quantum dots by a long laser pulse in the p-states are studied using time-resolved photoluminescence. Three bands of the transient photoluminescence spectra are identified, and the ignition and decay of each of them is studied. The complex picture of the time evolution of the bands is attributed to the fast processes of cascade intraband relaxation and the Pauli Exclusion Principle. The durations of the formation and decay for each of the photoluminescence bands are determined.Pavlenco, VladimirBelousov, IgorDobîndă, IgorOzol, DmitryD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 18, Iss 1-4, Pp 65-70 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Pavlenco, Vladimir Belousov, Igor Dobîndă, Igor Ozol, Dmitry Spectral and dynamical characterization of multiexciton complexes in CdSe/CdS/CdZnS colloidal quantum dots
description	The kinetics of a strongly nonequilibrium state of electrons and holes excited in quantum dots by a long laser pulse in the p-states are studied using time-resolved photoluminescence. Three bands of the transient photoluminescence spectra are identified, and the ignition and decay of each of them is studied. The complex picture of the time evolution of the bands is attributed to the fast processes of cascade intraband relaxation and the Pauli Exclusion Principle. The durations of the formation and decay for each of the photoluminescence bands are determined.
format	article
author	Pavlenco, Vladimir Belousov, Igor Dobîndă, Igor Ozol, Dmitry
author_facet	Pavlenco, Vladimir Belousov, Igor Dobîndă, Igor Ozol, Dmitry
author_sort	Pavlenco, Vladimir
title	Spectral and dynamical characterization of multiexciton complexes in CdSe/CdS/CdZnS colloidal quantum dots
title_short	Spectral and dynamical characterization of multiexciton complexes in CdSe/CdS/CdZnS colloidal quantum dots
title_full	Spectral and dynamical characterization of multiexciton complexes in CdSe/CdS/CdZnS colloidal quantum dots
title_fullStr	Spectral and dynamical characterization of multiexciton complexes in CdSe/CdS/CdZnS colloidal quantum dots
title_full_unstemmed	Spectral and dynamical characterization of multiexciton complexes in CdSe/CdS/CdZnS colloidal quantum dots
title_sort	spectral and dynamical characterization of multiexciton complexes in cdse/cds/cdzns colloidal quantum dots
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2019
url	https://doaj.org/article/92023b8f76514189b9ed5d657ea45722
work_keys_str_mv	AT pavlencovladimir spectralanddynamicalcharacterizationofmultiexcitoncomplexesincdsecdscdznscolloidalquantumdots AT belousovigor spectralanddynamicalcharacterizationofmultiexcitoncomplexesincdsecdscdznscolloidalquantumdots AT dobindaigor spectralanddynamicalcharacterizationofmultiexcitoncomplexesincdsecdscdznscolloidalquantumdots AT ozoldmitry spectralanddynamicalcharacterizationofmultiexcitoncomplexesincdsecdscdznscolloidalquantumdots
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Spectral and dynamical characterization of multiexciton complexes in CdSe/CdS/CdZnS colloidal quantum dots

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