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dc.citation.endPage 1918 -
dc.citation.number 2 -
dc.citation.startPage 1902 -
dc.citation.title ACS NANO -
dc.citation.volume 14 -
dc.contributor.author Wang, Zhu-Jun -
dc.contributor.author Dong, Jichen -
dc.contributor.author Li, Linfei -
dc.contributor.author Dong, Guocai -
dc.contributor.author Cui, Yi -
dc.contributor.author Yang, Yang -
dc.contributor.author Wei, Wei -
dc.contributor.author Blume, Raoul -
dc.contributor.author Li, Qing -
dc.contributor.author Wang, Li -
dc.contributor.author Xu, Xiaozhi -
dc.contributor.author Liu, Kaihui -
dc.contributor.author Barroo, Cedric -
dc.contributor.author Frenken, Joost W. M. -
dc.contributor.author Fu, Qiang -
dc.contributor.author Bao, Xinhe -
dc.contributor.author Schloegl, Robert -
dc.contributor.author Ding, Feng -
dc.contributor.author Willinger, Marc-Georg -
dc.date.accessioned 2023-12-21T18:06:32Z -
dc.date.available 2023-12-21T18:06:32Z -
dc.date.created 2020-12-21 -
dc.date.issued 2020-02 -
dc.description.abstract Wafer-scale monocrystalline two-dimensional (2D) materials can theoretically be grown by seamless coalescence of individual domains into a large single crystal. Here we present a concise study of the coalescence behavior of crystalline 2D films using a combination of complementary in situ methods. Direct observation of overlayer growth from the atomic to the millimeter scale and under model- and industrially relevant growth conditions reveals the influence of the film-substrate interaction on the crystallinity of the 2D film. In the case of weakly interacting substrates, the coalescence behavior is dictated by the inherent growth kinetics of the 2D film. It is shown that the merging of coaligned domains leads to a distinct modification of the growth dynamics through the formation of fast-growing high-energy edges. The latter can be traced down to a reduced kink-creation energy at the interface between well-aligned domains. In the case of strongly interacting substrates, the lattice mismatch between film and substrate induces a pronounced moire corrugation that determines the growth and coalescence behavior. It furthermore imposes additional criteria for seamless coalescence and determines the structure of grain boundaries. The experimental findings, obtained here for the case of graphene, are confirmed by theory-based growth simulations and can be generalized to other 2D materials that show 3- or 6-fold symmetry. Based on the gained understanding of the relation between film-substrate interaction, shape evolution, and coalescence behavior, conditions for seamless coalescence and, thus, for the optimization of large-scale production of monocrystalline 2D materials are established. -
dc.identifier.bibliographicCitation ACS NANO, v.14, no.2, pp.1902 - 1918 -
dc.identifier.doi 10.1021/acsnano.9b08221 -
dc.identifier.issn 1936-0851 -
dc.identifier.scopusid 2-s2.0-85081173379 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/49039 -
dc.identifier.url https://pubs.acs.org/doi/10.1021/acsnano.9b08221 -
dc.identifier.wosid 000518024700060 -
dc.language 영어 -
dc.publisher AMER CHEMICAL SOC -
dc.title The Coalescence Behavior of Two-Dimensional Materials Revealed by Multiscale In Situ Imaging during Chemical Vapor Deposition Growth -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Science & Technology - Other Topics; Materials Science -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor multiscale in situ imaging -
dc.subject.keywordAuthor seamless coalescence -
dc.subject.keywordAuthor 2D materials -
dc.subject.keywordAuthor complementary in situ methods -
dc.subject.keywordAuthor chemical vapor deposition -
dc.subject.keywordAuthor pressure gap -
dc.subject.keywordPlus SINGLE-CRYSTAL GRAPHENE -
dc.subject.keywordPlus EDGE-CONTROLLED GROWTH -
dc.subject.keywordPlus X-RAY PHOTOEMISSION -
dc.subject.keywordPlus GRAIN-BOUNDARIES -
dc.subject.keywordPlus EPITAXIAL GRAPHENE -
dc.subject.keywordPlus LARGE-AREA -
dc.subject.keywordPlus SURFACE SCIENCE -
dc.subject.keywordPlus PRESSURE -
dc.subject.keywordPlus CU -
dc.subject.keywordPlus DYNAMICS -

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