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Validity of the Top of the Barrier model for Quantum Transport in Nanowire MOSFETs. Objective: Find valid device regime for Top of the barrier (ToB) model. Determine the factors that decide this regime. Results:. I D -V G from 2D ToB (with DIBL)
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Validity of the Top of the Barrier model for Quantum Transport in Nanowire MOSFETs. • Objective: • Find valid device regime for Top of the barrier (ToB) model. • Determine the factors that decide this regime. Results: ID-VG from 2D ToB (with DIBL) matches quite well with 3D OMEN result for [100] wire with Lc = 15nm and W = H = 3nm. Approach : 2D ToB simulation time is less compared to 3D. Speedup is very rapid for larger cross-section devices. [a] (a) Self-consistency. (b) Flowchart of procedure • Impact: • 2D ToB a very reliable device model : • For longer channel length device. • Less compute time and lower memory requirements compared to 3D model. • Results presented in IWCE, 2009 [P109]. • 2 conditions must when ToB matches 3D : • Presence of source-channel barrier(>KT) • Very less S/D tunneling => long Lc devices • Lc>=(5 *wire diameter) good device regime for ToB model.