期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 113, 期 23, 页码 10249-10255出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp901578c
关键词
-
资金
- Spanish MEC [CTQ2004-07698-C02-02, CTQ2005-09105-C04-02]
The selective introduction of atomic-scale defects with tunable density in graphite, graphene, and carbon nanotubes is highly desirable, as it could afford a better control of their properties, but difficult to realize in practice. Here, we present a plasma-based chemical approach for the selective generation of single vacancies on the graphite surface with densities between similar to 5 x 10(2) and 3 x 10(5) mu m(-2) and apply it to the investigation of the migration behavior of this type of defect. Through scanning tunneling microscopy (STM) observation of vacancy-decorated graphite surfaces heat-treated to several different temperatures, the migration barrier for the single vacancy was deduced to be similar to 0.9-1.0 eV but could be reduced to similar to 0.7 eV via interaction with the STM tip. This constitutes the first direct experimental measurement of the migration barrier for the single vacancy in graphite that is consistent with theoretical calculations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据