• 文献标题:   On the Possibility of Tunable-Gap Bilayer Graphene FET
  • 文献类型:   Article
  • 作  者:   FIORI G, IANNACCONE G
  • 作者关键词:   graphene, nonequilibrium green s function negf, tightbinding hamiltonian
  • 出版物名称:   IEEE ELECTRON DEVICE LETTERS
  • ISSN:   0741-3106
  • 通讯作者地址:   Univ Pisa
  • 被引频次:   64
  • DOI:   10.1109/LED.2008.2010629
  • 出版年:   2009

▎ 摘  要

We explore the device potential of a tunable-gap bilayer graphene (BG) FET exploiting the possibility of opening a bandgap in BG by applying a vertical electric field via independent gate operation. We evaluate device behavior using atomistic simulations based on the self-consistent solution of the Poisson and Schrodinger equations within the nonequilibrium Green's function formalism. We show that the concept works, but the bandgap opening is not strong enough to suppress hand-to-hand tunneling in order to obtain a sufficiently large I(on)/I(off) ratio for CMOS device operation.