File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Linearly Polarized Luminescence of Atomically Thin MoS2 Semiconductor Nanocrystals

TitleLinearly Polarized Luminescence of Atomically Thin MoS2 Semiconductor Nanocrystals
Authors
Keywordsatomically thin colloidal semiconductors
TMD nanocrystals
in-plane confinement
optical alignment
valley pseudospin
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html
Citation
ACS Nano, 2019, v. 13 n. 11, p. 13006-13014 How to Cite?
AbstractAtomically thin layers of transition-metal dichalcogenides semiconductors, such as MoS2, exhibit strong and circularly polarized light emission due to inherent crystal symmetries, pronounced spin–orbit coupling, and out-of-plane dielectric and spatial confinement. While the layer-by-layer confinement is well-understood, the understanding of the impact of in-plane quantization in their optical spectrum is far behind. Here, we report the optical properties of atomically thin MoS2 colloidal semiconductor nanocrystals. In addition to the spatial-confinement effect leading to their blue wavelength emission, the high quality of our MoS2 nanocrystals is revealed by narrow photoluminescence, which allows us to resolve multiple optically active transitions, originating from quantum-confined excitons (coupled electron–hole pairs). Surprisingly, in stark contrast to monolayer MoS2, the luminescence of the lowest-energy levels is linearly polarized and persists up to room temperature, meaning that it could be exploited in a variety of light-emitting applications.
Persistent Identifierhttp://hdl.handle.net/10722/280095
ISSN
2019 Impact Factor: 14.588
2015 SCImago Journal Rankings: 7.120

 

DC FieldValueLanguage
dc.contributor.authorGranados del Águila, A-
dc.contributor.authorLiu, S-
dc.contributor.authorDo, TTH-
dc.contributor.authorLai, Z-
dc.contributor.authorTran, TH-
dc.contributor.authorKrupp, SR-
dc.contributor.authorGong, Z-R-
dc.contributor.authorZhang, H-
dc.contributor.authorYao, W-
dc.contributor.authorXiong, Q-
dc.date.accessioned2020-01-06T02:00:53Z-
dc.date.available2020-01-06T02:00:53Z-
dc.date.issued2019-
dc.identifier.citationACS Nano, 2019, v. 13 n. 11, p. 13006-13014-
dc.identifier.issn1936-0851-
dc.identifier.urihttp://hdl.handle.net/10722/280095-
dc.description.abstractAtomically thin layers of transition-metal dichalcogenides semiconductors, such as MoS2, exhibit strong and circularly polarized light emission due to inherent crystal symmetries, pronounced spin–orbit coupling, and out-of-plane dielectric and spatial confinement. While the layer-by-layer confinement is well-understood, the understanding of the impact of in-plane quantization in their optical spectrum is far behind. Here, we report the optical properties of atomically thin MoS2 colloidal semiconductor nanocrystals. In addition to the spatial-confinement effect leading to their blue wavelength emission, the high quality of our MoS2 nanocrystals is revealed by narrow photoluminescence, which allows us to resolve multiple optically active transitions, originating from quantum-confined excitons (coupled electron–hole pairs). Surprisingly, in stark contrast to monolayer MoS2, the luminescence of the lowest-energy levels is linearly polarized and persists up to room temperature, meaning that it could be exploited in a variety of light-emitting applications.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html-
dc.relation.ispartofACS Nano-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].-
dc.subjectatomically thin colloidal semiconductors-
dc.subjectTMD nanocrystals-
dc.subjectin-plane confinement-
dc.subjectoptical alignment-
dc.subjectvalley pseudospin-
dc.titleLinearly Polarized Luminescence of Atomically Thin MoS2 Semiconductor Nanocrystals-
dc.typeArticle-
dc.identifier.emailYao, W: wangyao@hku.hk-
dc.identifier.authorityYao, W=rp00827-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acsnano.9b05656-
dc.identifier.pmid31577129-
dc.identifier.scopuseid_2-s2.0-85073834262-
dc.identifier.hkuros308862-
dc.identifier.volume13-
dc.identifier.issue11-
dc.identifier.spage13006-
dc.identifier.epage13014-
dc.publisher.placeUnited States-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats