中国物理B ›› 2014, Vol. 23 ›› Issue (11): 117201-117201.doi: 10.1088/1674-1056/23/11/117201

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Radio-frequency transistors from millimeter-scale graphene domains

魏子钧a, 傅云义a, 刘竞博b, 王紫东a, 贾越辉a c, 郭剑a, 任黎明a, 陈远富b, 张酣c, 黄如a, 张兴a   

  1. a Institute of Microelectronics, Peking University, Beijing 100871, China;
    b State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Scienceand Technology of China, Chengdu 610054, China;
    c School of Physics, Peking University, Beijing 100871, China
  • 收稿日期:2014-03-25 修回日期:2014-05-05 出版日期:2014-11-15 发布日期:2014-11-15
  • 基金资助:

    Project supported by the National Basic Research Program of China (Grant Nos. 2011CBA00600, 2011CBA00601, and 2013CBA01604), the National Natural Science Foundation of China (Grant No. 60625403), and the National Science and Technology Major Project of China (Grant No. 2011ZX02707).

Radio-frequency transistors from millimeter-scale graphene domains

Wei Zi-Jun (魏子钧)a, Fu Yun-Yi (傅云义)a, Liu Jing-Bo (刘竞博)b, Wang Zi-Dong (王紫东)a, Jia Yue-Hui (贾越辉)a c, Guo Jian (郭剑)a, Ren Li-Ming (任黎明)a, Chen Yuan-Fu (陈远富)b, Zhang Han (张酣)c, Huang Ru (黄如)a, Zhang Xing (张兴)a   

  1. a Institute of Microelectronics, Peking University, Beijing 100871, China;
    b State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Scienceand Technology of China, Chengdu 610054, China;
    c School of Physics, Peking University, Beijing 100871, China
  • Received:2014-03-25 Revised:2014-05-05 Online:2014-11-15 Published:2014-11-15
  • Contact: Fu Yun-Yi E-mail:yyfu@pku.edu.cn
  • Supported by:

    Project supported by the National Basic Research Program of China (Grant Nos. 2011CBA00600, 2011CBA00601, and 2013CBA01604), the National Natural Science Foundation of China (Grant No. 60625403), and the National Science and Technology Major Project of China (Grant No. 2011ZX02707).

摘要:

Graphene is a new promising candidate for application in radio-frequency (RF) electronics due to its excellent electronic properties such as ultrahigh carrier mobility, large threshold current density, and high saturation velocity. Recently, much progress has been made in the graphene-based RF field-effect transistors (RF-FETs). Here we present for the first time the high-performance top-gated RF transistors using millimeter-scale single graphene domain on a SiO2/Si substrate through a conventional microfabrication process. A maximum cut-off frequency of 178 GHz and a peak maximum oscillation frequency of 35 GHz are achieved in the graphene-domain-based FET with a gate length of 50 nm and 150 nm, respectively. This work shows that the millimeter-scale single graphene domain has great potential applications in RF devices and circuits.

关键词: millimeter-scale graphene domain, radio-frequency transistor, cut-off frequency, maximum oscillation frequency

Abstract:

Graphene is a new promising candidate for application in radio-frequency (RF) electronics due to its excellent electronic properties such as ultrahigh carrier mobility, large threshold current density, and high saturation velocity. Recently, much progress has been made in the graphene-based RF field-effect transistors (RF-FETs). Here we present for the first time the high-performance top-gated RF transistors using millimeter-scale single graphene domain on a SiO2/Si substrate through a conventional microfabrication process. A maximum cut-off frequency of 178 GHz and a peak maximum oscillation frequency of 35 GHz are achieved in the graphene-domain-based FET with a gate length of 50 nm and 150 nm, respectively. This work shows that the millimeter-scale single graphene domain has great potential applications in RF devices and circuits.

Key words: millimeter-scale graphene domain, radio-frequency transistor, cut-off frequency, maximum oscillation frequency

中图分类号:  (Low-field transport and mobility; piezoresistance)

  • 72.20.Fr
72.80.Vp (Electronic transport in graphene)