Abstract
In this paper, a new nanoscale graded channel gate stack (GCGS) double-gate (DG) MOSFET structure and its 2-D analytical model have been proposed, investigated and expected to suppress the short-channel-effects (SCEs) and improve the subthreshold performances for nanoelectronics applications. The model predicts a shift, increasing potential barrier, in the surface potential profile along the channel, which ensures a reduced threshold voltage roll-off and DIBL effects. In the proposed structure, the subthreshold current and subthreshold swing characteristics are greatly improved in comparison with the conventional DG MOSFETs. The developed approaches are verified and validated by the good agreement found with the numerical simulation. (GCGS) DG MOSFET can alleviate the critical problem and further improve the immunity of SCEs of CMOS-based devices in the nanoscale regime.
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