• 文献标题:   First Principles Study of the Binding of 4d and 5d Transition Metals to Graphene
  • 文献类型:   Article
  • 作  者:   ZOLYOMI V, RUSZNYAK A, KURTI J, LAMBERT CJ
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF PHYSICAL CHEMISTRY C
  • ISSN:   1932-7447 EI 1932-7455
  • 通讯作者地址:   Univ Lancaster
  • 被引频次:   33
  • DOI:   10.1021/jp107669b
  • 出版年:   2010

▎ 摘  要

We study the strength of the binding of 4d and 5d transition metals on a graphene sheet in the limit of high-coverage using first principles density functional theory. A database of the binding energies is presented. Our results show that the elements with low or near-half occupation of the d shell bind strongest to the graphene sheet. We find a transfer of electrons from the transition metal to the graphene sheet; the charge transfer decreases with increasing d shell occupation. Motivated by the strong binding to Hf we also study the binding of graphene to the Hf rich surface of HfO2. The predicted binding energy of -0.18 eV per C atom when coupled with the existing integration of HfO2 into Si-based CMOS devices suggests a new route to integrating graphene with silicon, allowing for an integration of graphene-based nanoelectronic components into existing silicon-based technology.