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dc.contributor.author
Pun, Andrew B.
dc.contributor.author
Mule, Aniket S.
dc.contributor.author
Held, Jacob T.
dc.contributor.author
Norris, David J.
dc.date.accessioned
2021-10-15T12:13:19Z
dc.date.available
2021-10-06T13:37:32Z
dc.date.available
2021-10-15T12:13:19Z
dc.date.issued
2021-09-22
dc.identifier.issn
1530-6984
dc.identifier.issn
1530-6992
dc.identifier.other
10.1021/acs.nanolett.1c02412
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/508468
dc.description.abstract
Magic-sized semiconductor nanocrystals (MSNCs) grow via discrete jumps between specific sizes. Despite their potential to offer atomically precise structures, their use has been limited by poor stability and trap-dominated photoluminescence. Recently, CdSe MSNCs have been grown to larger sizes. We exploit such particles and demonstrate a method to grow shells on CdSe MSNC cores via high-temperature synthesis. Thin CdS shells lead to dramatic improvements in the emissive properties of the MSNCs, narrowing their fluorescence line widths, enhancing photoluminescence quantum yields, and eliminating trap emission. Although thicker CdS shells lead to decreased performance, CdxZn1-xS alloyed shells maintain efficient and narrow emission lines. These alloyed core/shell crystallites exhibit a tetrahedral shape, in agreement with a recent model for MSNC growth. Our results indicate that MSNCs can compete with other state-of-the-art semiconductor nanocrystals. Furthermore, these core/shell structures will allow further study of MSNCs and their potential for atomically precise growth.
en_US
dc.language.iso
en
en_US
dc.publisher
American Chemical Society
en_US
dc.subject
core/shell nanocrystals
en_US
dc.subject
CdSe/CdS/ZnS
en_US
dc.subject
magic-sized clusters
en_US
dc.subject
discrete growth
en_US
dc.subject
atomically precise
en_US
dc.title
Core/Shell Magic-Sized CdSe Nanocrystals
en_US
dc.type
Journal Article
dc.date.published
2021-08-31
ethz.journal.title
Nano Letters
ethz.journal.volume
21
en_US
ethz.journal.issue
18
en_US
ethz.journal.abbreviated
Nano Lett
ethz.pages.start
7651
en_US
ethz.pages.end
7658
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::02668 - Inst. f. Energie- und Verfahrenstechnik / Inst. Energy and Process Engineering::03875 - Norris, David J. / Norris, David J.
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::02668 - Inst. f. Energie- und Verfahrenstechnik / Inst. Energy and Process Engineering::03875 - Norris, David J. / Norris, David J.
ethz.date.deposited
2021-10-06T13:37:50Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-10-15T12:13:25Z
ethz.rosetta.lastUpdated
2022-03-29T14:17:04Z
ethz.rosetta.versionExported
true
ethz.COinS
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