Direct growth of large-area graphene and boron nitride heterostructures by a co-segregation method

Nature Communications
Chaohua ZhangZhongfan Liu

Abstract

Graphene/hexagonal boron nitride (h-BN) vertical heterostructures have recently revealed unusual physical properties and new phenomena, such as commensurate-incommensurate transition and fractional quantum hall states featured with Hofstadter's butterfly. Graphene-based devices on h-BN substrate also exhibit high performance owing to the atomically flat surface of h-BN and its lack of charged impurities. To have a clean interface between the graphene and h-BN for better device performance, direct growth of large-area graphene/h-BN heterostructures is of great importance. Here we report the direct growth of large-area graphene/h-BN vertical heterostructures by a co-segregation method. By one-step annealing sandwiched growth substrates (Ni(C)/(B, N)-source/Ni) in vacuum, wafer-scale graphene/h-BN films can be directly formed on the metal surface. The as-grown vertically stacked graphene/h-BN structures are demonstrated by various morphology and spectroscopic characterizations. This co-segregation approach opens up a new pathway for large-batch production of graphene/h-BN heterostructures and would also be extended to the synthesis of other van der Waals heterostructures.

References

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Citations

Nov 19, 2015·ACS Nano·Chandkiram GautamPulickel M Ajayan
Dec 10, 2015·Scientific Reports·Sugkyun ChaChangsoon Kim
Nov 1, 2016·ACS Applied Materials & Interfaces·C N R Rao, K Gopalakrishnan
May 27, 2017·Nature Communications·Bo DaZejun Ding
Jul 12, 2017·Chemical Society Reviews·Pablo Solís-FernándezHiroki Ago
Jul 30, 2016·Science·K S NovoselovA H Castro Neto
Feb 6, 2016·Chemical Society Reviews·Xin ChenYunqi Liu
May 14, 2016·Chemical Society Reviews·Qunhong WengDmitri Golberg
Sep 26, 2015·Physical Chemistry Chemical Physics : PCCP·Dongchao WangPinhua Zhang
Nov 19, 2017·Scientific Reports·T MukhopadhyayM Asle Zaeem
Jul 26, 2018·Chemical Society Reviews·Ki Kang KimYoung Hee Lee
Sep 19, 2018·Physical Chemistry Chemical Physics : PCCP·Song LiAlice Hu
Nov 12, 2016·Nature Communications·Wenjing YanFèlix Casanova
Jan 14, 2016·Nanotechnology·Hui CaiSefaattin Tongay
Oct 6, 2017·Chemical Communications : Chem Comm·Liuyong Chen, Xinchen Wang
Nov 18, 2018·Nanotechnology·Xinsheng WangLiming Xie

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