A Physics Based Model for DC Self-Heating in Nanowire-FET Considering Lattice Temperature

Abstract

In this paper, a unified physics based 2-D analytical model for DC self-heating in Nanowire-FET is presented for the first time. The carrier and lattice-temperatures are considered in the model to include the effect of self-heating in Nanowire-FET. The model uses superposition approach to solve 2-D Poisson’s equation capturing the electrostatic potential of the device while the energy balance equation and temperature dependent mobility equation captures the effect of increased lattice temperature. By obtaining a good agreement with calibrated 3-D Sentaurus-TCAD electro-thermal simulations, the accuracy of the developed model is validated.