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다차원 탄소재료 연구단
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Structural Evolution of Boron Clusters on Ag(111) Surfaces - From Atomic Chains to Triangular Sheets with Hexagonal Holes

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Title
Structural Evolution of Boron Clusters on Ag(111) Surfaces - From Atomic Chains to Triangular Sheets with Hexagonal Holes
Author(s)
Sun, Yi; Zhang, Xiuyun; Tang, Jingyi; Guo, Tianxia; Zhou, Min; Yao, Xiaojing; Liu, Lili; Liu, Yongjun; Feng Ding
Publication Date
2021-05
Journal
CHEMPHYSCHEM, v.22, no.9, pp.894 - 903
Publisher
WILEY-V C H VERLAG GMBH
Abstract
Unlike graphene and other 2D materials, borophene is 2D polymorphic with diverse hexagonal holes (HHs)-triangles ratios and the concentrations of HHs are highly substrate dependent. Here, we systematically explored the evolution of boron cluster on Ag(111) surface, B-N@Ag(111) (N=1 similar to 36), to understand the nucleation of 2D boron sheet on metal surface. Our calculation showed that, with the size increasing, the structures of most stable B-N clusters undergo an evolution from compact triangular lattice, such as double-chains or triple-chains, to the ones with mixed triangular-hexagonal lattices. The first single-HH appears at N=12 and the first double-HH appears at N=27. The stability of large B-N clusters with mixed structures is derived from the charge transfer between triangular lattice and the HHs, as well as between the substrates and the B-N clusters. Our results provide a deep understanding on the formation of small boron clusters in the initial nucleation stage of borophene growth.
URI
https://pr.ibs.re.kr/handle/8788114/9656
DOI
10.1002/cphc.202001019
ISSN
1439-4235
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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