Causes of asymmetry in graphene transfer characteristics
Junction Technology（2010）
摘要
Back-gated graphene field-effect transistor (FET) with Carrier mobility values over 8000 cm2/Vs is fabricated. Contact resistances and carrier motilities are extracted from an established model. We investigate the asymmetry in its transfer characteristics and attribute it to the differences in contact resistances modulated by the back gate voltages and distinct mobility of electrons and holes. The experimental results are analyzed quantitatively and the mechanisms are discussed.
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关键词
carrier mobility,contact resistance,field effect transistors,fet,back gate voltage,field-effect transistor,graphene transfer characteristic,electron mobility,voltage,electrodes,microelectronics,logic gates,field effect transistor
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