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Title: Electron accumulation in graphene by interaction with optically excited quantum dots
Authors: Klekachev, Alexander ×
Cantoro, Mirco
van der Veen, M.H.
Stesmans, Andre
Heyns, Marc
De Gendt, Stefan #
Issue Date: Mar-2011
Publisher: North-Holland
Series Title: Physica E, Low-dimensional Systems & Nanostructures vol:43 issue:5 pages:1046-1049
Abstract: Zero-dimensional semiconductor nanocrystals (quantum dots) are known to interact with other metallic or semiconductor medium by means of resonant energy transfer or transfer of electronic charge. In the present work we demonstrate efficient electronic interaction of quantum dots and recently discovered graphene, single atom thick two-dimensional carbon crystal. Transfer of optically generated carriers from a quantum dot to graphene is seen by the quench of quantum dots photoluminescence and confirmed by the electrical measurements on single-layer graphene transistor. The phenomenon reported could find an application in graphene-based optical switching and light harvesting. (C) 2010 Elsevier B.V. All rights reserved.
URI: 
ISSN: 1386-9477
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Materials Engineering - miscellaneous
Semiconductor Physics Section
Molecular Design and Synthesis
× corresponding author
# (joint) last author

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