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Facile Synthesis of Wafer-Scale Single-Crystal Graphene Film on Atomic Sawtooth Cu Substrate

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Title
Facile Synthesis of Wafer-Scale Single-Crystal Graphene Film on Atomic Sawtooth Cu Substrate
Author(s)
Seungjin Lee; Soo Ho Choi; Hayoung Ko; Soo Min Kim; Ki Kang Kim
Publication Date
2023-01
Journal
Applied Science and Convergence Technology, v.32, no.1, pp.26 - 29
Publisher
Korean Vacuum Society
Abstract
© The Korean Vacuum Society. Wafer-scale single-crystal (SC) graphene film is highly required for industrial applications including electronic, photonic, and optoelectronic devices. While SC graphene film has been successfully synthesized on SC Cu (111) or H-Ge (110) substrates, preparation methods of SC growth substrate are still not practical. Here, we report the facile synthesis of wafer-scale SC graphene film on atomic sawtooth Cu substrate by means of chemical vapor deposition. Atomic sawtooth Cu substrates are prepared by melting Cu foils on W foils and solidifying them. The substrates are subsequently employed for synthesis of SC graphene without formation of grain boundaries. The electron diffraction patterns, visualized by transmission electron microscopy, reveal that graphene film has the same lattice orientation over the whole region. Furthermore, Raman mapping measurement demonstrates the homogeneity of the optical property of SC graphene films. Our method provides a new route for the synthesis of SC graphene, as well as other two-dimensional materials. © 2023, Korean Vacuum Society. All rights reserved.
URI
https://pr.ibs.re.kr/handle/8788114/13178
DOI
10.5757/ASCT.2023.32.1.26
ISSN
1225-8822
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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