Sub-nanometre channels embedded in two-dimensional materials

Handle URI:
http://hdl.handle.net/10754/626652
Title:
Sub-nanometre channels embedded in two-dimensional materials
Authors:
Han, Yimo; Li, Ming-yang; Jung, Gang-Seob; Marsalis, Mark A.; Qin, Zhao; Buehler, Markus J.; Li, Lain-Jong ( 0000-0002-4059-7783 ) ; Muller, David A.
Abstract:
Two-dimensional (2D) materials are among the most promising candidates for next-generation electronics due to their atomic thinness, allowing for flexible transparent electronics and ultimate length scaling1. Thus far, atomically thin p–n junctions2,3,4,5,6,7,8, metal–semiconductor contacts9,10,11, and metal–insulator barriers12,13,14 have been demonstrated. Although 2D materials achieve the thinnest possible devices, precise nanoscale control over the lateral dimensions is also necessary. Here, we report the direct synthesis of sub-nanometre-wide one-dimensional (1D) MoS2 channels embedded within WSe2 monolayers, using a dislocation-catalysed approach. The 1D channels have edges free of misfit dislocations and dangling bonds, forming a coherent interface with the embedding 2D matrix. Periodic dislocation arrays produce 2D superlattices of coherent MoS2 1D channels in WSe2. Using molecular dynamics simulations, we have identified other combinations of 2D materials where 1D channels can also be formed. The electronic band structure of these 1D channels offers the promise of carrier confinement in a direct-gap material and the charge separation needed to access the ultimate length scales necessary for future electronic applications.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Han Y, Li M-Y, Jung G-S, Marsalis MA, Qin Z, et al. (2017) Sub-nanometre channels embedded in two-dimensional materials. Nature Materials. Available: http://dx.doi.org/10.1038/nmat5038.
Publisher:
Springer Nature
Journal:
Nature Materials
Issue Date:
4-Dec-2017
DOI:
10.1038/nmat5038
Type:
Article
ISSN:
1476-1122; 1476-4660
Sponsors:
The authors acknowledge discussions with M. Zhao, L. Wang, C. Zhen, M. Holtz, H.-S. Kim, C. Gong, T. Cao, M. S. Ramos, L. F. Kourkoutis, B. Savitzky, M. Zhao, C.-J. Kim, K. Kang, J. Park, D. Jena and J. Sethna. This work made use of the electron microscopy facility of the Cornell Center for Materials Research (CCMR) with support from the National Science Foundation (NSF) Materials Research Science and Engineering Centers (MRSEC) program (DMR-1120296) and NSF Major Research Instrumentation Program (DMR-1429155). Y.H. and D.M. were supported by NSF Grant (DMR-1719875) and DOD-MURI (Grant No. FA9550-16-1-0031). G.-S.J., Z.Q. and M.J.B. acknowledge support by the Office of Naval Research (Grant No. N00014-16-1-233) and DOD-MURI (Grant No. FA9550-15-1-0514). We acknowledge support for supercomputing resources from the Supercomputing Center/KISTI (KSC-2017-C2-0013). M.-Y.L. and L.L. thank the support from King Abdullah University of Science and Technology (KAUST) and Academia Sinica.
Additional Links:
https://www.nature.com/articles/nmat5038
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorHan, Yimoen
dc.contributor.authorLi, Ming-yangen
dc.contributor.authorJung, Gang-Seoben
dc.contributor.authorMarsalis, Mark A.en
dc.contributor.authorQin, Zhaoen
dc.contributor.authorBuehler, Markus J.en
dc.contributor.authorLi, Lain-Jongen
dc.contributor.authorMuller, David A.en
dc.date.accessioned2018-01-01T12:19:05Z-
dc.date.available2018-01-01T12:19:05Z-
dc.date.issued2017-12-04en
dc.identifier.citationHan Y, Li M-Y, Jung G-S, Marsalis MA, Qin Z, et al. (2017) Sub-nanometre channels embedded in two-dimensional materials. Nature Materials. Available: http://dx.doi.org/10.1038/nmat5038.en
dc.identifier.issn1476-1122en
dc.identifier.issn1476-4660en
dc.identifier.doi10.1038/nmat5038en
dc.identifier.urihttp://hdl.handle.net/10754/626652-
dc.description.abstractTwo-dimensional (2D) materials are among the most promising candidates for next-generation electronics due to their atomic thinness, allowing for flexible transparent electronics and ultimate length scaling1. Thus far, atomically thin p–n junctions2,3,4,5,6,7,8, metal–semiconductor contacts9,10,11, and metal–insulator barriers12,13,14 have been demonstrated. Although 2D materials achieve the thinnest possible devices, precise nanoscale control over the lateral dimensions is also necessary. Here, we report the direct synthesis of sub-nanometre-wide one-dimensional (1D) MoS2 channels embedded within WSe2 monolayers, using a dislocation-catalysed approach. The 1D channels have edges free of misfit dislocations and dangling bonds, forming a coherent interface with the embedding 2D matrix. Periodic dislocation arrays produce 2D superlattices of coherent MoS2 1D channels in WSe2. Using molecular dynamics simulations, we have identified other combinations of 2D materials where 1D channels can also be formed. The electronic band structure of these 1D channels offers the promise of carrier confinement in a direct-gap material and the charge separation needed to access the ultimate length scales necessary for future electronic applications.en
dc.description.sponsorshipThe authors acknowledge discussions with M. Zhao, L. Wang, C. Zhen, M. Holtz, H.-S. Kim, C. Gong, T. Cao, M. S. Ramos, L. F. Kourkoutis, B. Savitzky, M. Zhao, C.-J. Kim, K. Kang, J. Park, D. Jena and J. Sethna. This work made use of the electron microscopy facility of the Cornell Center for Materials Research (CCMR) with support from the National Science Foundation (NSF) Materials Research Science and Engineering Centers (MRSEC) program (DMR-1120296) and NSF Major Research Instrumentation Program (DMR-1429155). Y.H. and D.M. were supported by NSF Grant (DMR-1719875) and DOD-MURI (Grant No. FA9550-16-1-0031). G.-S.J., Z.Q. and M.J.B. acknowledge support by the Office of Naval Research (Grant No. N00014-16-1-233) and DOD-MURI (Grant No. FA9550-15-1-0514). We acknowledge support for supercomputing resources from the Supercomputing Center/KISTI (KSC-2017-C2-0013). M.-Y.L. and L.L. thank the support from King Abdullah University of Science and Technology (KAUST) and Academia Sinica.en
dc.publisherSpringer Natureen
dc.relation.urlhttps://www.nature.com/articles/nmat5038en
dc.titleSub-nanometre channels embedded in two-dimensional materialsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalNature Materialsen
dc.contributor.institutionSchool of Applied and Engineering Physics, Cornell University, Ithaca, New York 14850, USAen
dc.contributor.institutionResearch Center for Applied Sciences, Academia Sinica, Taipei 10617, Taiwanen
dc.contributor.institutionDepartment of Civil and Environmental Engineering, MIT, Cambridge, Massachusetts 02139, USAen
dc.contributor.institutionDepartment of Physics, Texas Tech University, Lubbock, Texas 79416, USAen
dc.contributor.institutionKavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, New York 14850, USAen
kaust.authorLi, Ming-yangen
kaust.authorLi, Lain-Jongen
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