Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures

Photoelectrical and photoluminescent properties of multilayer graphene (MLG)–quantum dots (QD) hybrid structures have been studied. It has been shown that the average rate of transfer from QDs to the MLG can be estimated via photoinduced processes on the QDs’ surfaces. A monolayer of CdSe QDs can do...

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Autores principales: Reznik, Ivan, Zlatov, Andrey, Baranov, Mikhail, Zakoldaev, Roman, Veniaminov, Andrey, Moshkalev, Stanislav, Orlova, Anna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7221764/
https://www.ncbi.nlm.nih.gov/pubmed/32283817
http://dx.doi.org/10.3390/nano10040714
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author Reznik, Ivan
Zlatov, Andrey
Baranov, Mikhail
Zakoldaev, Roman
Veniaminov, Andrey
Moshkalev, Stanislav
Orlova, Anna
author_facet Reznik, Ivan
Zlatov, Andrey
Baranov, Mikhail
Zakoldaev, Roman
Veniaminov, Andrey
Moshkalev, Stanislav
Orlova, Anna
author_sort Reznik, Ivan
collection PubMed
description Photoelectrical and photoluminescent properties of multilayer graphene (MLG)–quantum dots (QD) hybrid structures have been studied. It has been shown that the average rate of transfer from QDs to the MLG can be estimated via photoinduced processes on the QDs’ surfaces. A monolayer of CdSe QDs can double the photoresponse amplitude of multilayer graphene, without influencing its characteristic photoresponse time. It has been found that efficient charge or energy transfer from QDs to MLG with a rate higher than 3 × 10(8) s(−1) strongly inhibits photoinduced processes on the QD surfaces and provides photostability for QD-based structures.
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spelling pubmed-72217642020-05-21 Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures Reznik, Ivan Zlatov, Andrey Baranov, Mikhail Zakoldaev, Roman Veniaminov, Andrey Moshkalev, Stanislav Orlova, Anna Nanomaterials (Basel) Article Photoelectrical and photoluminescent properties of multilayer graphene (MLG)–quantum dots (QD) hybrid structures have been studied. It has been shown that the average rate of transfer from QDs to the MLG can be estimated via photoinduced processes on the QDs’ surfaces. A monolayer of CdSe QDs can double the photoresponse amplitude of multilayer graphene, without influencing its characteristic photoresponse time. It has been found that efficient charge or energy transfer from QDs to MLG with a rate higher than 3 × 10(8) s(−1) strongly inhibits photoinduced processes on the QD surfaces and provides photostability for QD-based structures. MDPI 2020-04-09 /pmc/articles/PMC7221764/ /pubmed/32283817 http://dx.doi.org/10.3390/nano10040714 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Reznik, Ivan
Zlatov, Andrey
Baranov, Mikhail
Zakoldaev, Roman
Veniaminov, Andrey
Moshkalev, Stanislav
Orlova, Anna
Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures
title Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures
title_full Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures
title_fullStr Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures
title_full_unstemmed Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures
title_short Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures
title_sort photophysical properties of multilayer graphene–quantum dots hybrid structures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7221764/
https://www.ncbi.nlm.nih.gov/pubmed/32283817
http://dx.doi.org/10.3390/nano10040714
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