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dc.contributor.authorOvesen, Simon
dc.contributor.authorBrem, Samuel
dc.contributor.authorLinderälv, Christopher
dc.contributor.authorKuisma, Mikael
dc.contributor.authorKorn, Tobias
dc.contributor.authorErhart, Paul
dc.contributor.authorSelig, Malte
dc.contributor.authorMalic, Ermin
dc.date.accessioned2019-03-15T08:29:21Z
dc.date.available2019-03-15T08:29:21Z
dc.date.issued2019fi
dc.identifier.citationOvesen, S., Brem, S., Linderälv, C., Kuisma, M., Korn, T., Erhart, P., . . . , & Malic, E. (2019). Interlayer exciton dynamics in van der Waals heterostructures. <em>Communications Physics</em>, 2, 23. <a href="https://doi.org/10.1038/s42005-019-0122-z">doi:10.1038/s42005-019-0122-z</a>fi
dc.identifier.otherTUTKAID_80840
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/63139
dc.description.abstractAtomically thin transition metal dichalcogenides can be stacked to van der Waals heterostructures enabling the design of new materials with tailored properties. The strong Coulomb interaction gives rise to interlayer excitons, where electrons and holes are spatially separated in different layers. In this work, we reveal the time- and momentum-dependent elementary processes behind the formation, thermalization and photoemission of interlayer excitons for the exemplary MoSe2–WSe2 heterostructure. We identify tunneling of holes from MoSe2 to WSe2 on a ps timescale as the crucial process for interlayer exciton formation. We also predict a drastic reduction of the formation time as a function of the interlayer energy offset suggesting that interlayer excitons can be externally tuned. Finally, we explain the experimental observation of a dominant photoluminescence from interlayer excitons despite the vanishingly small oscillator strength as a consequence of huge interlayer exciton occupations at low temperatures.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherNature Publishing Group
dc.relation.ispartofseriesCommunications Physics
dc.rightsCC BY 4.0
dc.subject.othertwo-dimensional materialsfi
dc.titleInterlayer exciton dynamics in van der Waals heterostructuresfi
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201903051740
dc.contributor.laitosKemian laitosfi
dc.contributor.laitosDepartment of Chemistryen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2019-03-05T13:15:14Z
dc.description.reviewstatuspeerReviewed
dc.relation.issn2399-3650
dc.relation.numberinseries0
dc.relation.volume2
dc.type.versionpublishedVersion
dc.rights.copyright© The Author(s) 2019
dc.rights.accesslevelopenAccessfi
dc.format.contentfulltext
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1038/s42005-019-0122-z


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