高峻峰

个人信息Personal Information

教授

博士生导师

硕士生导师

主要任职:大连理工大学白俄罗斯国立大学联合学院副院长

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:物理学院

学科:凝聚态物理

办公地点:中白学院252

电子邮箱:gaojf@dlut.edu.cn

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Graphene Nucleation on Transition Metal Surface: Structure Transformation and Role of the Metal Step Edge

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论文类型:期刊论文

第一作者:Gao, Junfeng

通讯作者:Ding, F (reprint author), Hong Kong Polytech Univ, Inst Text & Clothing, Hong Kong, Hong Kong, Peoples R China.

合写作者:Yip, Joanne,Zhao, Jijun,Yakobson, Boris I.,Ding, Feng

发表时间:2011-04-06

发表刊物:JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录刊物:Scopus、SCIE、EI

卷号:133

期号:13

页面范围:5009-5015

ISSN号:0002-7863

摘要:The nucleation of graphene on a transition metal surface, either on a terrace or near a step edge, is systematically explored using density functional theory calculations and applying the two-dimensional (2D) crystal nucleation theory. Careful optimization of the supported carbon clusters, C-N (with size N ranging from 1 to 24), on the Ni(111) surface indicates a ground state structure transformation from a one-dimensional C chain to a 2D sp(2) C network at N approximate to 10-12. Furthermore, the crucial parameters controlling graphene growth on the metal surface, nucleation barrier, nucleus size, and nucleation rate on a terrace or near a step edge are calculated. In agreement with numerous experimental observations, our analysis shows that graphene nucleation near a metal step edge is superior to that on a terrace. On the basis of our analysis, we propose the use of graphene seeds to synthesize high-quality graphene in large area.