Authors: K. Kim, I-S Park and T. Won
Affilation: Inha University, Korea
Pages: 87 - 90
Keywords: double-gate MOSFET, short-channel effect
We propose a novel device structure (Si1-xGex/Si/Si1-xGex hetero-structure), which is called “center-channel (CC) double-gate (DG) MOSFET, ”. The device performance of the proposed FET structure was investigated with our two-dimensional quantum-mechanical simulator which is based upon the self-consistent solution of Poisson-Schrödinger equations and the current continuity equation . The CC operation of CC-NMOS is confirmed by considering the band lineups as well as the lowest energy wave function. Especially, the lowest energy wave function of CC-MOSFET is carefully compared with those of the conventional DG-NMOS in order to observe the distinct feature of the proposed FET structure. Furthermore, device optimization for the CC operation and short-channel effects (SCE) was performed in terms of Ge concentration, gate length (Lg), and Si1-xGex/Si/Si1-xGex scale variation.