Direct Synthesis of Quaternary Alkylammonium-Capped Perovskite Nanocrystals for Efficient Blue and Green Light-Emitting Diodes
dc.contributor.author
Shynkarenko, Yevhen
dc.contributor.author
Bodnarchuk, Maryna I.
dc.contributor.author
Bernasconi, Caterina
dc.contributor.author
Berezovska, Yuliia
dc.contributor.author
Verteletskyi, Vladyslav
dc.contributor.author
Ochsenbein, Stefan T.
dc.contributor.author
Kovalenko, Maksym V.
dc.date.accessioned
2019-11-26T11:38:04Z
dc.date.available
2019-11-26T03:51:16Z
dc.date.available
2019-11-26T11:38:04Z
dc.date.issued
2019-11-08
dc.identifier.issn
2380-8195
dc.identifier.other
10.1021/acsenergylett.9b01915
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/380419
dc.identifier.doi
10.3929/ethz-b-000380419
dc.description.abstract
Cesium lead halide nanocrystals (CsPbX3 NCs) are new inorganic light sources covering the entire visible spectral range and exhibiting near-unity efficiencies. While the last years have seen rapid progress in green and red electroluminescence from CsPbX3 NCs, the development of blue counterparts remained rather stagnant. Controlling the surface state of CsPbX3 NCs had proven to be a major factor governing the efficiency of the charge injection and for diminishing the density of traps. Although didodecyldimethylammonium halides (DDAX; X = Br, Cl) had been known to improve the luminescence of CsPbX3 NCs when applied postsynthetically, they had not been used as the sole long-chain ammonium ligand directly in the synthesis of these NCs. Herein we report a facile, direct synthesis of DDAX-stabilized CsPbX3 NCs. We then demonstrate blue and green light-emitting diodes, characterized by the electroluminescence at 463–515 nm and external quantum efficiencies of 9.80% for green, 4.96% for sky-blue, and 1.03% for deep-blue spectral regions.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
American Chemical Society
en_US
dc.rights.uri
http://rightsstatements.org/page/InC-NC/1.0/
dc.title
Direct Synthesis of Quaternary Alkylammonium-Capped Perovskite Nanocrystals for Efficient Blue and Green Light-Emitting Diodes
en_US
dc.type
Journal Article
dc.rights.license
In Copyright - Non-Commercial Use Permitted
dc.date.published
2019-10-11
ethz.journal.title
ACS Energy Letters
ethz.journal.volume
4
en_US
ethz.journal.issue
11
en_US
ethz.journal.abbreviated
ACS Energy Lett.
ethz.pages.start
2703
en_US
ethz.pages.end
2711
en_US
ethz.version.deposit
publishedVersion
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::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::03934 - Kovalenko, Maksym / Kovalenko, Maksym
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::03934 - Kovalenko, Maksym / Kovalenko, Maksym
ethz.date.deposited
2019-11-26T03:51:21Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-11-26T11:38:19Z
ethz.rosetta.lastUpdated
2023-02-06T17:54:25Z
ethz.rosetta.versionExported
true
ethz.COinS
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