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Tailoring Single- And Double-Sided Fluorination of Bilayer Graphene via Substrate Interactions

Cited 12 time in Web of Science Cited 16 time in Scopus

Son, Jangyup; Ryu, Huije; Kwon, Junyoung; Huang, Siyuan; Yu, Jaehyung; Xu, Jingwei; Watanabe, Kenji; Taniguchi, Takashi; Ji, Eunji; Lee, Sol; Shin, Yongjun; Kim, Jong Hun; Kim, Kwanpyo; Van Der Zande, Arend M.; Lee, Gwan-Hyoung

Issue Date
American Chemical Society
Nano Letters, Vol.21 No.2, pp.891-898
While many technologies rely on multilayer heterostructures, most of the studies on chemical functionalization have been limited to monolayer graphene. In order to use functionalization in multilayer systems, we must first understand the interlayer interactions between functionalized and nonfunctionalized (intact) layers and how to selectively functionalize one layer at a time. Here, we demonstrate a method to fabricate single- or double-sided fluorinated bilayer graphene (FBG) by tailoring substrate interactions. Both the top and bottom surfaces of bilayer graphene on the rough silicon dioxide (SiO2) are fluorinated; meanwhile, only the top surface of graphene on hexagonal boron nitride (hBN) is fluorinated. The functionalization type affects electronic properties; double-sided FBG on SiO2 is insulating, whereas single-sided FBG on hBN maintains conducting, showing that the intact bottom layer becomes electrically decoupled from the fluorinated top insulating layer. Our results define a straightforward method to selectively functionalize the top and bottom surfaces of bilayer graphene.
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  • College of Engineering
  • Department of Materials Science & Engineering
Research Area 2D materials, 2D crystal structures , 2D materials and fabrication processing, Advanced battery materials, Next-generation electronic devices


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