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Reaching the Excitonic Limit in 2D Janus Monolayers by In Situ Deterministic Growth.

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cam.issuedOnline2021-12-22
dc.contributor.authorQin, Ying
dc.contributor.authorSayyad, Mohammed
dc.contributor.authorMontblanch, Alejandro R-P
dc.contributor.authorFeuer, Matthew SG
dc.contributor.authorDey, Dibyendu
dc.contributor.authorBlei, Mark
dc.contributor.authorSailus, Renee
dc.contributor.authorKara, Dhiren M
dc.contributor.authorShen, Yuxia
dc.contributor.authorYang, Shize
dc.contributor.authorBotana, Antia S
dc.contributor.authorAtature, Mete
dc.contributor.authorTongay, Sefaattin
dc.contributor.orcidTongay, Sefaattin [0000-0001-8294-984X]
dc.date.accessioned2022-01-05T16:31:52Z
dc.date.available2022-01-05T16:31:52Z
dc.date.issued2022-02
dc.date.submitted2021-08-10
dc.date.updated2022-01-05T16:31:52Z
dc.description.abstractNamed after the two-faced Roman god of transitions, transition metal dichalcogenide (TMD) Janus monolayers have two different chalcogen surfaces, inherently breaking the out-of-plane mirror symmetry. The broken mirror symmetry and the resulting potential gradient lead to the emergence of quantum properties such as the Rashba effect and the formation of dipolar excitons. Experimental access to these quantum properties, however, hinges on the ability to produce high-quality 2D Janus monolayers. Here, these results introduce a holistic 2D Janus synthesis technique that allows real-time monitoring of the growth process. This prototype chamber integrates in situ spectroscopy, offering fundamental insights into the structural evolution and growth kinetics, that allow the evaluation and optimization of the quality of Janus monolayers. The versatility of this method is demonstrated by synthesizing and monitoring the conversion of SWSe, SNbSe, and SMoSe Janus monolayers. Deterministic conversion and real-time data collection further aid in conversion of exfoliated TMDs to Janus monolayers and unparalleled exciton linewidth values are reached, compared to the current best standard. The results offer an insight into the process kinetics and aid in the development of new Janus monolayers with high optical quality, which is much needed to access their exotic properties.
dc.identifier.doi10.17863/CAM.79518
dc.identifier.eissn1521-4095
dc.identifier.issn0935-9648
dc.identifier.otheradma202106222
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/332071
dc.languageen
dc.language.isoeng
dc.publisherWiley
dc.publisher.urlhttp://dx.doi.org/10.1002/adma.202106222
dc.subject2D materials
dc.subjectJanus materials
dc.subjectin situ synthesis
dc.subjectquantum materials
dc.titleReaching the Excitonic Limit in 2D Janus Monolayers by In Situ Deterministic Growth.
dc.typeArticle
prism.publicationNameAdv Mater
pubs.funder-project-idEngineering and Physical Sciences Research Council (2275031)
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
rioxxterms.versionVoR
rioxxterms.versionofrecord10.1002/adma.202106222

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