Title
Three-dimensional atomic imaging of colloidal core-shell nanocrystals Three-dimensional atomic imaging of colloidal core-shell nanocrystals
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Washington ,
Subject
Physics
Source (journal)
Nano letters / American Chemical Society. - Washington
Volume/pages
11(2011) :8 , p. 3420-3424
ISSN
1530-6984
ISI
000293665600062
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Colloidal coreshell semiconductor nanocrystals form an important class of optoelectronic materials, in which the exciton wave functions can be tailored by the atomic configuration of the core, the interfacial layers, and the shell. Here, we provide a trustful 3D characterization at the atomic scale of a free-standing PbSe(core)CdSe(shell) nanocrystal by combining electron microscopy and discrete tomography. Our results yield unique insights for understanding the process of cation exchange, which is widely employed in the synthesis of coreshell nanocrystals. The study that we present is generally applicable to the broad range of colloidal heteronanocrystals that currently emerge as a new class of materials with technological importance.
E-info
https://repository.uantwerpen.be/docman/iruaauth/490d11/0d7748cd1af.pdf
Full text (open access)
https://repository.uantwerpen.be/docman/irua/496a1e/1090.pdf
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