Photophysical Properties of Multilayer Graphene–Quantum Dots Hybrid Structures

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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Bibliographic Details
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
Description
Summary: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.
ISSN:2079-4991

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