Abstract
A tunneling field effect transistor based on armchair graphene nanoribbons is studied using ballistic quantum transport simulation based on 3D real space nonequilibrium Green's function formalism. By introducing a pocket doping region near the source, the performance of GNRs TFET is improved in terms of larger on current and steeper subthreshold swings compared to conventional tunneling FET. It is also found that pocket region introduces two interesting features. By increasing the pocket length the ambipolar can be effectively suppressed. Furthermore, there is negative trans-conductance at negative gate voltage due to resonance.
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