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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Main Authors:	Ivan Reznik, Andrey Zlatov, Mikhail Baranov, Roman Zakoldaev, Andrey Veniaminov, Stanislav Moshkalev, Anna Orlova
Format:	Article
Language:	English
Published:	MDPI AG 2020-04-01
Series:	Nanomaterials
Subjects:	multilayered graphene CdSe–ZnS quantum dots hybrid structures photophysical properties photoelectrical properties photoactivation
Online Access:	https://www.mdpi.com/2079-4991/10/4/714

id	doaj-263c4efc47da4ad8924f1222e994fbe4
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spelling	doaj-263c4efc47da4ad8924f1222e994fbe42020-11-25T02:26:48ZengMDPI AGNanomaterials2079-49912020-04-011071471410.3390/nano10040714Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid StructuresIvan Reznik0Andrey Zlatov1Mikhail Baranov2Roman Zakoldaev3Andrey Veniaminov4Stanislav Moshkalev5Anna Orlova6School of Photonics, ITMO University, St. Petersburg 197101, RussiaSchool of Photonics, ITMO University, St. Petersburg 197101, RussiaSchool of Photonics, ITMO University, St. Petersburg 197101, RussiaSchool of Photonics, ITMO University, St. Petersburg 197101, RussiaSchool of Photonics, ITMO University, St. Petersburg 197101, RussiaCenter for Semiconductor Components , State University of Campinas (Unicamp), Campinas 13083-970, BrazilSchool of Photonics, ITMO University, St. Petersburg 197101, RussiaPhotoelectrical 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<sup>8</sup> s<sup>−1</sup> strongly inhibits photoinduced processes on the QD surfaces and provides photostability for QD-based structures.https://www.mdpi.com/2079-4991/10/4/714multilayered grapheneCdSe–ZnS quantum dotshybrid structuresphotophysical propertiesphotoelectrical propertiesphotoactivation
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Ivan Reznik Andrey Zlatov Mikhail Baranov Roman Zakoldaev Andrey Veniaminov Stanislav Moshkalev Anna Orlova
spellingShingle	Ivan Reznik Andrey Zlatov Mikhail Baranov Roman Zakoldaev Andrey Veniaminov Stanislav Moshkalev Anna Orlova Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures Nanomaterials multilayered graphene CdSe–ZnS quantum dots hybrid structures photophysical properties photoelectrical properties photoactivation
author_facet	Ivan Reznik Andrey Zlatov Mikhail Baranov Roman Zakoldaev Andrey Veniaminov Stanislav Moshkalev Anna Orlova
author_sort	Ivan Reznik
title	Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures
title_short	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_sort	photophysical properties of multilayer graphene–quantum dots hybrid structures
publisher	MDPI AG
series	Nanomaterials
issn	2079-4991
publishDate	2020-04-01
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<sup>8</sup> s<sup>−1</sup> strongly inhibits photoinduced processes on the QD surfaces and provides photostability for QD-based structures.
topic	multilayered graphene CdSe–ZnS quantum dots hybrid structures photophysical properties photoelectrical properties photoactivation
url	https://www.mdpi.com/2079-4991/10/4/714
work_keys_str_mv	AT ivanreznik photophysicalpropertiesofmultilayergraphenequantumdotshybridstructures AT andreyzlatov photophysicalpropertiesofmultilayergraphenequantumdotshybridstructures AT mikhailbaranov photophysicalpropertiesofmultilayergraphenequantumdotshybridstructures AT romanzakoldaev photophysicalpropertiesofmultilayergraphenequantumdotshybridstructures AT andreyveniaminov photophysicalpropertiesofmultilayergraphenequantumdotshybridstructures AT stanislavmoshkalev photophysicalpropertiesofmultilayergraphenequantumdotshybridstructures AT annaorlova photophysicalpropertiesofmultilayergraphenequantumdotshybridstructures
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Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures

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