Regulating Surficial Catalysis Mechanism of Copper Metal by Manipulating Reactive Intermediate for Growth of Homogenous Bernal-Stacked Bilayer Graphene

TY - JOUR

T1 - Regulating Surficial Catalysis Mechanism of Copper Metal by Manipulating Reactive Intermediate for Growth of Homogenous Bernal-Stacked Bilayer Graphene

AU - Yang, Qian

AU - Hu, Baoshan

AU - Jin, Yan

AU - Luo, Zhengtang

AU - Besenbacher, Flemming

AU - Fang, Liang

AU - Dong, Lichun

AU - Dong, Mingdong

PY - 2017/9/8

Y1 - 2017/9/8

N2 - Large scale and homogenous bernal-stacked bilayer (AB-stacked) graphene is a promising 2D functional material due to its distinct electronic properties. As motivated by some evidence, the continuous carbon radicals (e.g., ·CH3) can greatly contribute to the nucleation and growth of second layer graphene film; thus, overcoming the self-limited catalysis regime of metallic Cu surface by conventional chemical vapor deposition. Herein, a two-step reaction system is designed to facilitate more continuously supplying reactive intermediate for the second layer growth of graphene. With this strategy, monolayer and AB-stacked bilayer graphene films can be controllably grown by simply tuning the confined amount of predeposited amorphous carbon (α-C) under atmospheric pressure rather than low pressure or vacuum. This approach opens a straightforward way to grow 2D materials by managing the surficially catalytic kinetics in the two separated reaction units.

AB - Large scale and homogenous bernal-stacked bilayer (AB-stacked) graphene is a promising 2D functional material due to its distinct electronic properties. As motivated by some evidence, the continuous carbon radicals (e.g., ·CH3) can greatly contribute to the nucleation and growth of second layer graphene film; thus, overcoming the self-limited catalysis regime of metallic Cu surface by conventional chemical vapor deposition. Herein, a two-step reaction system is designed to facilitate more continuously supplying reactive intermediate for the second layer growth of graphene. With this strategy, monolayer and AB-stacked bilayer graphene films can be controllably grown by simply tuning the confined amount of predeposited amorphous carbon (α-C) under atmospheric pressure rather than low pressure or vacuum. This approach opens a straightforward way to grow 2D materials by managing the surficially catalytic kinetics in the two separated reaction units.

KW - AB-stacked bilayer graphene

KW - Homogenous

KW - Process matching

KW - Thickness control

KW - ·CH intermediates

U2 - 10.1002/admi.201700415

DO - 10.1002/admi.201700415

M3 - Journal article

AN - SCOPUS:85023631811

SN - 2196-7350

VL - 4

JO - Advanced Materials Interfaces

JF - Advanced Materials Interfaces

IS - 17

M1 - 1700415

ER -