• 文献标题:   Bilayer graphene nanoribbon field-effect transistor with electrically embedded source-side gate
  • 文献类型:   Article
  • 作  者:   OWLIA H, FAZLI R
  • 作者关键词:   bilayer graphene nanoribbon fieldeffect transistor blgnrfet, gate engineering, shortchannel effects sces, nonequilibrium green s function negf
  • 出版物名称:   SUPERLATTICES MICROSTRUCTURES
  • ISSN:   0749-6036
  • 通讯作者地址:   Ardakan Univ
  • 被引频次:   0
  • DOI:   10.1016/j.spmi.2020.106525
  • 出版年:   2020

▎ 摘  要

In present-day technology, a bilayer graphene field-effect transistor (BLGNRFET) is known as a suitable alternative for continuing the scaling trend of transistor dimensions. This paper proposes an electrically embedded source-side gate BLGNRFET (EESG-BLGNRFET) in which an appropriate gate engineering takes into account near the source extension. In the proposed structure, this induces a vertical electric field and a larger bandgap in the vicinity of the source for low gate biases reducing off current. The EESG-BLGNRFET benefits from several analog and digital metrics. Intrinsic gain and cut-off frequency 84% and 44% are respectively improved in the EESG-BLGNRFET. Furthermore, the delay and power-delay product (PDP) of the proposed structure are lower than those of the conventional counterpart. It is shown that drain-induced barrier lowing (DIBL) in the EESG-BLGNRFET is decreased that makes the device less sensitive to short-channel effects.