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dc.contributor.author
Hopper, Thomas R.
dc.contributor.author
Jeong, Ahhyun
dc.contributor.author
Gorodetskya, Andrei A.
dc.contributor.author
Krieg, Franziska
dc.contributor.author
Bodnarchuk, Maryna I.
dc.contributor.author
Huang, Xiaokun
dc.contributor.author
Lovrincic, Robert
dc.contributor.author
Kovalenko, Maksym V.
dc.contributor.author
Bakulin, Artem A.
dc.date.accessioned
2020-09-28T06:55:53Z
dc.date.available
2020-09-26T19:48:33Z
dc.date.available
2020-09-28T06:55:53Z
dc.date.issued
2020-08-21
dc.identifier.issn
1463-9084
dc.identifier.issn
1463-9076
dc.identifier.other
10.1039/d0cp01599g
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/442882
dc.identifier.doi
10.3929/ethz-b-000442882
dc.description.abstract
The relaxation of high-energy “hot” carriers in semiconductors is known to involve the redistribution of energy between hot and cold carriers, as well as the transfer of energy from hot carriers to phonons. Over the past few years, these two processes have been identified in lead-halide perovskites (LHPs) using ultrafast pump–probe experiments, but their interplay is not fully understood. Here we present a practical and intuitive kinetic model that accounts for the effects of both hot and cold carriers on carrier relaxation in LHPs. We apply this model to describe the dynamics of hot carriers in bulk and nanocrystalline CsPbBr3 as observed by multi-pulse “pump–push–probe” spectroscopy. The model captures the slowing of the relaxation dynamics in the materials as the number of hot carriers increases, which has previously been explained by a “hot-phonon bottleneck” mechanism. The model also correctly predicts an acceleration of the relaxation kinetics as the number of cold carriers in the samples is increased. Using a series of natural approximations, we reduce our model to a simple form containing terms for the carrier–carrier and carrier–phonon interactions. The model can be instrumental for evaluating the details of carrier relaxation and carrier–phonon couplings in LHPs and other soft optoelectronic materials.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Royal Society of Chemistry
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc/3.0/
dc.title
Kinetic modelling of intraband carrier relaxation in bulk and nanocrystalline lead-halide perovskites
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial 3.0 Unported
dc.date.published
2020-07-22
ethz.journal.title
Physical Chemistry Chemical Physics
ethz.journal.volume
22
en_US
ethz.journal.issue
31
en_US
ethz.journal.abbreviated
Phys. Chem. Chem. Phys.
ethz.pages.start
17605
en_US
ethz.pages.end
17611
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.scopus
ethz.publication.place
Cambridge
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
2020-09-26T19:48:40Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-09-28T06:56:04Z
ethz.rosetta.lastUpdated
2022-03-29T03:13:07Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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