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Ding, Feng
IBS - Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Theoretical methods development for materials studies.
  • The formation mechanism of various carbon materials, from fullerene to carbon nanotube and graphene.
  • Kinetics and thermodynamics of materials growth and etching.
  • The structure, properties and fundamentals of nanomaterials.
  • The experimental synthesis of carbon nanotubes.

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Dual-coupling-guided epitaxial growth of wafer-scale single-crystal WS2 monolayer on vicinal a-plane sapphire

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dc.contributor.author Wang, Jinhuan ko
dc.contributor.author Xu, Xiaozhi ko
dc.contributor.author Cheng, Ting ko
dc.contributor.author Gu, Lehua ko
dc.contributor.author Qiao, Ruixi ko
dc.contributor.author Liang, Zhihua ko
dc.contributor.author Ding, Dongdong ko
dc.contributor.author Hong, Hao ko
dc.contributor.author Zheng, Peiming ko
dc.contributor.author Zhang, Zhibin ko
dc.contributor.author Zhang, Zhihong ko
dc.contributor.author Zhang, Shuai ko
dc.contributor.author Cui, Guoliang ko
dc.contributor.author Chang, Chao ko
dc.contributor.author Huang, Chen ko
dc.contributor.author Qi, Jiajie ko
dc.contributor.author Liang, Jing ko
dc.contributor.author Liu, Can ko
dc.contributor.author Zuo, Yonggang ko
dc.contributor.author Xue, Guodong ko
dc.contributor.author Fang, Xinjie ko
dc.contributor.author Tian, Jinpeng ko
dc.contributor.author Wu, Muhong ko
dc.contributor.author Guo, Yi ko
dc.contributor.author Yao, Zhixin ko
dc.contributor.author Jiao, Qingze ko
dc.contributor.author Liu, Lei ko
dc.contributor.author Gao, Peng ko
dc.contributor.author Li, Qunyang ko
dc.contributor.author Yang, Rong ko
dc.contributor.author Zhang, Guangyu ko
dc.contributor.author Tang, Zhilie ko
dc.contributor.author Yu, Dapeng ko
dc.contributor.author Wang, Enge ko
dc.contributor.author Lu, Jianming ko
dc.contributor.author Zhao, Yun ko
dc.contributor.author Wu, Shiwei ko
dc.contributor.author Ding, Feng ko
dc.contributor.author Liu, Kaihui ko
dc.date.available 2021-11-25T08:08:40Z -
dc.date.created 2021-11-17 ko
dc.date.issued 2022-01 ko
dc.identifier.citation NATURE NANOTECHNOLOGY, v.17, pp.33 - 38 ko
dc.identifier.issn 1748-3387 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/54891 -
dc.description.abstract The growth of wafer-scale single-crystal two-dimensional transition metal dichalcogenides (TMDs) on insulating substrates is critically important for a variety of high-end applications(1-4). Although the epitaxial growth of wafer-scale graphene and hexagonal boron nitride on metal surfaces has been reported(5-8), these techniques are not applicable for growing TMDs on insulating substrates because of substantial differences in growth kinetics. Thus, despite great efforts(9-20), the direct growth of wafer-scale single-crystal TMDs on insulating substrates is yet to be realized. Here we report the successful epitaxial growth of two-inch single-crystal WS2 monolayer films on vicinal a-plane sapphire surfaces. In-depth characterizations and theoretical calculations reveal that the epitaxy is driven by a dual-coupling-guided mechanism, where the sapphire plane-WS2 interaction leads to two preferred antiparallel orientations of the WS2 crystal, and sapphire step edge-WS2 interaction breaks the symmetry of the antiparallel orientations. These two interactions result in the unidirectional alignment of nearly all the WS2 islands. The unidirectional alignment and seamless stitching of WS2 islands are illustrated via multiscale characterization techniques; the high quality of WS2 monolayers is further evidenced by a photoluminescent circular helicity of similar to 55%, comparable to that of exfoliated WS2 flakes. Our findings offer the opportunity to boost the production of wafer-scale single crystals of a broad range of two-dimensional materials on insulators, paving the way to applications in integrated devices. ko
dc.language 영어 ko
dc.publisher NATURE RESEARCH ko
dc.title Dual-coupling-guided epitaxial growth of wafer-scale single-crystal WS2 monolayer on vicinal a-plane sapphire ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85119001115 ko
dc.identifier.wosid 000718769300001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1038/s41565-021-01004-0 ko
dc.identifier.url https://www.nature.com/articles/s41565-021-01004-0 ko
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