Wafer-scale single-crystal hexagonal boron nitride monolayers on Cu (111)

Nature
Tse-An ChenLain-Jong Li

Abstract

Ultrathin two-dimensional (2D) semiconducting layered materials offer great potential for extending Moore's law of the number of transistors in an integrated circuit1. One key challenge with 2D semiconductors is to avoid the formation of charge scattering and trap sites from adjacent dielectrics. An insulating van der Waals layer of hexagonal boron nitride (hBN) provides an excellent interface dielectric, efficiently reducing charge scattering2,3. Recent studies have shown the growth of single-crystal hBN films on molten gold surfaces4 or bulk copper foils5. However, the use of molten gold is not favoured by industry, owing to its high cost, cross-contamination and potential issues of process control and scalability. Copper foils might be suitable for roll-to-roll processes, but are unlikely to be compatible with advanced microelectronic fabrication on wafers. Thus, a reliable way of growing single-crystal hBN films directly on wafers would contribute to the broad adoption of 2D layered materials in industry. Previous attempts to grow hBN monolayers on Cu (111) metals have failed to achieve mono-orientation, resulting in unwanted grain boundaries when the layers merge into films6,7. Growing single-crystal hBN on such high-symme...Continue Reading

References

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Mar 14, 2019·Nature·Ming-Yang LiLain-Jong Li

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Citations

May 15, 2020·Physical Chemistry Chemical Physics : PCCP·Leander HaugErminald Bertel
Jul 11, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Chunyu XieYanfeng Zhang
Aug 18, 2020·Advanced Materials·Jia ZhangPingAn Hu
Nov 17, 2020·Advanced Materials·Yixuan FanWenping Hu
Nov 19, 2020·Nature Communications·Jichen DongFeng Ding
Feb 12, 2021·Nature Communications·Arne QuellmalzFrank Niklaus
Jan 23, 2021·ACS Nano·Hui ZhangChih-Kang Shih
Mar 5, 2021·Nature·Yuan LiuXiangfeng Duan
Apr 7, 2021·ACS Nano·Evgeni S PenevBoris I Yakobson
Mar 25, 2021·Nanotechnology·Hui YangGuo-Ping Guo
May 21, 2021·Journal of Computational Chemistry·Musen LiRoger D Amos
May 20, 2021·Angewandte Chemie·Lei KangBing Huang
Jul 2, 2021·ACS Applied Materials & Interfaces·Debjit GhoshalSu-Fei Shi
Aug 14, 2021·The Journal of Physical Chemistry Letters·Jichen DongYunqi Liu
Aug 20, 2021·JPhys Materials·Albert F RigosiNicholas R Glavin
Dec 31, 2020·ACS Nano·Huanyao CunThomas Greber
Sep 12, 2020·The Journal of Physical Chemistry Letters·Ren JiangQinghong Yuan
Aug 14, 2020·Nano Letters·Bing DengHailin Peng
Nov 24, 2020·ACS Applied Materials & Interfaces·Shubin SuHaihua Tao
Sep 9, 2021·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Peter Hess
Sep 26, 2021·Advanced Materials·Soumyabrata RoyPulickel M Ajayan
Sep 11, 2021·Chemistry : a European Journal·Lei Kang, Zheshuai Lin
Nov 4, 2021·Science Advances·Marc G CuxartWilli Auwärter

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Methods Mentioned

BETA
X-ray
electron diffraction
scanning tunnelling microscopy
electron

Software Mentioned

MedeA
Vienna ab initio simulation package ( VASP )

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