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Article: Near-unity photoluminescence quantum yield in MoS2

TitleNear-unity photoluminescence quantum yield in MoS2
Authors
Issue Date2015
Citation
Science, 2015, v. 350, n. 6264, p. 1065-1068 How to Cite?
AbstractTwo-dimensional (2D) transition metal dichalcogenides have emerged as a promising material system for optoelectronic applications, but their primary figure of merit, the room-temperature photoluminescence quantum yield (QY), is extremely low.The prototypical 2D material molybdenum disulfide (MoS2) is reported to have a maximum QYof 0.6%, which indicates a considerable defect density. Herewe report on an air-stable, solution-based chemical treatment by an organic superacid, which uniformly enhances the photoluminescence and minority carrier lifetime of MoS2 monolayers by more than two orders of magnitude.The treatment eliminates defect-mediated nonradiative recombination, thus resulting in a finalQYofmore than 95%, with a longest-observed lifetime of 10.8 0.6 nanoseconds. Our ability to obtain optoelectronic monolayers with near-perfect properties opens the door for the development of highly efficient light-emitting diodes, lasers, and solar cells based on 2D materials.
Persistent Identifierhttp://hdl.handle.net/10722/256756
ISSN
2020 Impact Factor: 47.728
2015 SCImago Journal Rankings: 13.217
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorAmani, Matin-
dc.contributor.authorLien, Der Hsien-
dc.contributor.authorKiriya, Daisuke-
dc.contributor.authorXiao, Jun-
dc.contributor.authorAzcatl, Angelica-
dc.contributor.authorNoh, Jiyoung-
dc.contributor.authorMadhvapathy, Surabhi R.-
dc.contributor.authorAddou, Rafik-
dc.contributor.authorSantosh, K. C.-
dc.contributor.authorDubey, Madan-
dc.contributor.authorCho, Kyeongjae-
dc.contributor.authorWallace, Robert M.-
dc.contributor.authorLee, Si Chen-
dc.contributor.authorHe, Jr Hau-
dc.contributor.authorAger, Joel W.-
dc.contributor.authorZhang, Xiang-
dc.contributor.authorYablonovitch, Eli-
dc.contributor.authorJavey, Ali-
dc.date.accessioned2018-07-24T08:57:49Z-
dc.date.available2018-07-24T08:57:49Z-
dc.date.issued2015-
dc.identifier.citationScience, 2015, v. 350, n. 6264, p. 1065-1068-
dc.identifier.issn0036-8075-
dc.identifier.urihttp://hdl.handle.net/10722/256756-
dc.description.abstractTwo-dimensional (2D) transition metal dichalcogenides have emerged as a promising material system for optoelectronic applications, but their primary figure of merit, the room-temperature photoluminescence quantum yield (QY), is extremely low.The prototypical 2D material molybdenum disulfide (MoS2) is reported to have a maximum QYof 0.6%, which indicates a considerable defect density. Herewe report on an air-stable, solution-based chemical treatment by an organic superacid, which uniformly enhances the photoluminescence and minority carrier lifetime of MoS2 monolayers by more than two orders of magnitude.The treatment eliminates defect-mediated nonradiative recombination, thus resulting in a finalQYofmore than 95%, with a longest-observed lifetime of 10.8 0.6 nanoseconds. Our ability to obtain optoelectronic monolayers with near-perfect properties opens the door for the development of highly efficient light-emitting diodes, lasers, and solar cells based on 2D materials.-
dc.languageeng-
dc.relation.ispartofScience-
dc.titleNear-unity photoluminescence quantum yield in MoS2-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1126/science.aad2114-
dc.identifier.scopuseid_2-s2.0-84948470755-
dc.identifier.volume350-
dc.identifier.issue6264-
dc.identifier.spage1065-
dc.identifier.epage1068-
dc.identifier.eissn1095-9203-
dc.identifier.isiWOS:000366422600037-
dc.identifier.issnl0036-8075-

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