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Modeling and simulation of a nanoscale three-region tri-material gate stack (TRIMGAS) MOSFET for improved carrier transport efficiency and reduced hot-electron effects

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4 Author(s)
Goel, K. ; Dept. of Electron. Sci., Univ. of Delhi, New Delhi ; Saxena, M. ; Gupta, M. ; Gupta, R.S.

Two-dimensional (2-D) analytical modeling for a novel multiple region MOSFET device architecture-Tri-Material Gate Stack MOSFET-is presented, which shows reduced short-channel effects at short gate lengths. Using a three-region analysis in the horizontal direction and a universal depletion width boundary condition, the 2-D potential and electric field distribution in the channel region along with the threshold voltage of the device are obtained. The proposed model is capable of modeling electrical characteristics like surface potential, electric field, and threshold voltage of various other existent MOSFET structures like dual-material-gate, electrically induced shallow junction/straddle-gate (side-gate), and single-material-gate MOSFETs, with and without the gate stack architecture. The 2-D device simulator ATLAS is used over a wide range of parameters and bias conditions to validate the analytical results

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Electron Devices, IEEE Transactions on  (Volume:53 ,  Issue: 7 )