engleski

Quantum-Mechanical Modeling of Phonon-Limited Electron Mobility in Bulk MOSFETs, Ultrathin-Body SOI MOSFETs and Double-Gate MOSFETs for Different Orientations

A comprehensive study of low-field phonon-limited mobility behavior with downscaling of silicon body thickness in ultrathin-body SOI MOSFETs and double-gate MOSFETs is presented. Phonon-limited mobility is obtained by self-consistent Schrödinger-Poisson simulations and momentum relaxation rate calculations. Single- and double-gate devices with (100), (110) and (111) active surfaces and body thickness down to 2 nm are investigated. Physical mechanisms which govern mobility behavior are studied by calculating form factors and ladder/subband occupancy.

mobility; phonon scattering; quantum confinement; ultra-thin body; double-gate MOSFET

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