The effects of low power density CO2 laser irradiation on graphene properties

被引：27
|
作者：
Huang, Ting [1 ]
Long, Jiangyou [1 ]
Zhong, Minlin [1 ]
Jiang, Juan [1 ]
Ye, Xiaohui [1 ]
Lin, Zhe [1 ]
Li, Lin [2 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, Laser Mat Proc Res Ctr, Beijing 100084, Peoples R China
[2] Univ Manchester, Laser Proc Res Ctr, Sch Mech Aerosp & Civil Engn, Manchester M13 9PL, Lancs, England
来源：
APPLIED SURFACE SCIENCE | 2013年 / 273卷
关键词：
Graphene; Laser irradiation; Thermal annealing; Raman spectrum; XPS;
D O I：
10.1016/j.apsusc.2013.02.069
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report the investigations on structural modifications in monolayer graphene induced by low-power-density CO2 laser irradiation (2-60 W/cm(2)). Observed modifications in graphene include the disassembly of crystalline graphene into nanocrystalline structure and the generation of amorphous carbon. It was found that thermal effect played an important role during laser irradiation. By adjusting laser power density, irradiation time and temperature, the structure of graphene can be modified accordingly in a controlled manner. Our approach may enable high-efficiency and economical modification of large-area graphene, which relies on large-area irradiation using low-power-density laser. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：502 / 506
页数：5
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