The Nucleation Process in the Preparation of Graphene Films by Pulsed Laser Deposition  

作　　者：王进 WANG Xuemin YU Jian XIAO Tingting PENG Liping XIONG Zhengwei CAO Linhong WANG Chuanbin 沈强 

机构地区：[1]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology [2]Research Center of Laser Fusion,China Academy of Engineering Physics [3]Laboratory for Extreme Conditions Matter Properties,Southwest University of Science and Technology [4]School of Materials Science and Engineering,Southwest University of Science and Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2018年第2期343-348,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.51521001);the“111”Project(No.B13035)

摘　　要：The nucleation process of graphene films prepared by pulsed laser deposition has been investigated in detail. It is found that graphene nucleates at the steps on the substrate surface firstly, from aggregation of nuclei into particles. High pulsed laser energy offers large incident energy for carbon particles deposited on the surface of the substrate, which is beneficial to the nucleation of graphene. A lot of steps are formed on the copper substrate due to the high temperature, so that the high incident energetic carbon species are able to form a stable nucleus at the steps. As the incident particles increases, the graphene nuclei are combined to grow together. Further, it is found that graphene tends to form few layer graphene particles instead of large graphene sheets.The nucleation process of graphene films prepared by pulsed laser deposition has been investigated in detail. It is found that graphene nucleates at the steps on the substrate surface firstly, from aggregation of nuclei into particles. High pulsed laser energy offers large incident energy for carbon particles deposited on the surface of the substrate, which is beneficial to the nucleation of graphene. A lot of steps are formed on the copper substrate due to the high temperature, so that the high incident energetic carbon species are able to form a stable nucleus at the steps. As the incident particles increases, the graphene nuclei are combined to grow together. Further, it is found that graphene tends to form few layer graphene particles instead of large graphene sheets.

关 键 词：graphene PLD nucleation 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TQ127.11[化学工程—无机化工]