Local Atomic and Electronic Structure of Boron Chemical Doping in Monolayer Graphene

被引：174

作者：

Zhao, Liuyan ^{[1
]}

Levendorf, Mark ^{[2
]}

Goncher, Scott ^{[3
]}

Schiros, Theanne ^{[4
]}

Palova, Lucia ^{[3
]}

Zabet-Khosousi, Arnir ^{[3
]}

Rim, Kwang Taeg ^{[3
]}

Gutierrez, Christopher ^{[1
]}

Nordlund, Dennis ^{[5
]}

Jaye, Cherno ^{[6
]}

Hybertsen, Mark ^{[7
]}

Reichman, David R. ^{[3
]}

Flynn, George W. ^{[3
]}

Park, Jiwoong ^{[2
]}

Pasupathy, Abhay N. ^{[1
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] Cornell Univ, Dept Chem, Ithaca, NY 10065 USA

[3] Columbia Univ, Dept Chem, New York, NY 10027 USA

[4] Columbia Univ, Energy Frontier Res Ctr, New York, NY 10027 USA

[5] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

[6] NIST, Mat Measurement Lab, Gaithersburg, MD 20899 USA

[7] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA

来源：

NANO LETTERS | 2013年 / 13卷 / 10期

基金：

美国国家科学基金会; 新加坡国家研究基金会;

关键词：

Graphene chemical doping; scanning tunneling microscopy/spectroscopy; boron-doped graphene; graphene functionalization; X-ray spectroscopy; NITROGEN-DOPED GRAPHENE; VAPOR-DEPOSITION; SPECTROSCOPY; GROWTH; ENERGY; CARBON; EDGE;

D O I：

10.1021/nl401781d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We use scanning tunneling microscopy and X-ray spectroscopy to characterize the, atomic and electronic structure of boron-doped and nitrogen-doped graphene created by chemical vapor deposition on copper substrates. Microscopic measurements show that boron, like nitrogen, incorporates into the carbon lattice primarily in the graphitic form and contributes 0.5 carriers into the graphene sheet per dopant: Density functional theory calculations indicate that boron dopants interact strongly with the, underlying copper substrate while nitrogen dopants do not. The local bonding differences between graphitic boron and nitrogen dopants lead to large scale differences in dopant distribution. The distribution of dopants is observed to be completely random in the case of boron, while nitrogen displays strong sublattice clustering. Structurally, nitrogen-doped graphene is doped graphene films show.a large number of Stone-Wales defects. These defects create local electronic resonances electronic scattering, but do not electronically dope the graphene film. relatively defect-free while boronand cause

引用

页码：4659 / 4665

页数：7

共 53 条

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