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Cited 8 time in webofscience Cited 7 time in scopus
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Universal Oriented van der Waals Epitaxy of 1D Cyanide Chains on Hexagonal 2D Crystals

Authors
YANGJINLEEKoo J.이솔JUN-YEONGYOONKim K.장명진JEONGSU JANGJEONGHEON CHOELi B.-W.Le C.T.Ullah F.Kim Y.S.Hwang J.Y.Lee W.C.Ruoff R.S.Cheong H.Jinwoo CheonLee H.KWANPYO KIM
Issue Date
Feb-2020
Publisher
Wiley-vch Verlag GmbH &Co
Keywords
1D cyanide chains; 2D hexagonal crystals; oriented van der Waals epitaxy; vertical heterostructures
Citation
Advanced Science, v.7, no.4, pp.1900757-1 - 1900757-9
Journal Title
Advanced Science
Volume
7
Number
4
Start Page
1900757-1
End Page
1900757-9
URI
https://yscholarhub.yonsei.ac.kr/handle/2021.sw.yonsei/5321
DOI
10.1002/advs.201900757
ISSN
2198-3844
Abstract
The atomic or molecular assembly on 2D materials through the relatively weak van der Waals interaction is quite different from the conventional heteroepitaxy and may result in unique growth behaviors. Here, it is shown that straight 1D cyanide chains display universal epitaxy on hexagonal 2D materials. A universal oriented assembly of cyanide crystals (AgCN, AuCN, and Cu0.5Au0.5CN) is observed, where the chains are aligned along the three zigzag lattice directions of various 2D hexagonal crystals (graphene, h-BN, WS2, MoS2, WSe2, MoSe2, and MoTe2). The potential energy landscape of the hexagonal lattice induces this preferred alignment of 1D chains along the zigzag lattice directions, regardless of the lattice parameter and surface elements as demonstrated by first-principles calculations and parameterized surface potential calculations. Furthermore, the oriented microwires can serve as crystal orientation markers, and stacking-angle-controlled vertical 2D heterostructures are successfully fabricated by using them as markers. The oriented van der Waals epitaxy can be generalized to any hexagonal 2D crystals and will serve as a unique growth process to form crystals with orientations along the zigzag directions by epitaxy.
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