Formation of graphene sheets through laser exfoliation of highly ordered pyrolytic graphite

被引：102
|
作者：
Qian, Min [1 ]
Zhou, Yun Shen [1 ]
Gao, Yang [1 ]
Park, Jong Bok [1 ]
Feng, Tao [2 ]
Huang, Su Mei [2 ]
Sun, Zhuo [2 ]
Jiang, Lan [3 ]
Lu, Yong Feng [1 ]
机构：
[1] Univ Nebraska, Dept Elect Engn, Lincoln, NE 68588 USA
[2] E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China
[3] Beijing Inst Technol, Dept Mech & Automat Engn, Beijing 100081, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 17期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.3584021
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Freestanding two-dimensional (2D) few-layer graphene was formed through laser exfoliation of highly ordered pyrolytic graphite, using a pulsed neodymium-doped yttrium aluminum garnet (Nd:YAG) laser. Graphene sheets of several nanometers in thickness and micrometers in size were obtained. The laser exfoliation process was investigated at different laser fluences and distances between target and substrate. Three different phases, amorphous carbon, few-layer graphene sheets, and thin graphite films, were obtained as the laser fluence increased. This study reveals an existing route of forming freestanding 2D nanostructures through laser exfoliation. (C) 2011 American Institute of Physics. [doi:10.1063/1.3584021]
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页数：3
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