• 文献标题:   Graphene-based vertical thin film transistors
  • 文献类型:   Review
  • 作  者:   LIU LT, LIU Y, DUAN XF
  • 作者关键词:   graphene electrode, vertical transistor, thin film transistor, van der waals heterostructure
  • 出版物名称:   SCIENCE CHINAINFORMATION SCIENCES
  • ISSN:   1674-733X EI 1869-1919
  • 通讯作者地址:   Hunan Univ
  • 被引频次:   2
  • DOI:   10.1007/s11432-020-2806-8
  • 出版年:   2020

▎ 摘  要

Vertical field effect transistors (VFETs), where the channel material is sandwiched between source-drain electrodes and the channel length is simply determined by its body thickness, have attracted considerable interest for high performance electronics owning to their intrinsic short channel length. To enable the effective gate modulation and current switching behavior, the electrode of conventional VFET is largely based on perforated metals, in which the gate electrical field could penetrate through. Recently, with the emerge of graphene, a new type of graphene based VFETs has been developed. With finite density of states and the weak electrostatic screening effect, graphene exhibits a field-tunable work-function and partial electrostatic transparency, it can thus function as an "active" contact with tunable graphene-channel junction, enabling entirely new transistor functions or higher device performance not previously possible. In this review, we discuss the research progresses of graphene-based VFET, including the its basic device structure, carrier transport mechanism, device performance and novel properties demonstrated.