考虑晶格温度的纳米线场效应管直流自热物理模型

Manoj Kumar, A. Bansal, K. Aditya, Charu Gupta, Anshul Gupta, A. Dixit
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引用次数: 0

摘要

本文首次建立了基于统一物理的纳米线场效应管直流自热的二维解析模型。模型中考虑了载流子温度和晶格温度,考虑了纳米线场效应管的自热效应。该模型采用叠加法求解捕获器件静电势的二维泊松方程,而能量平衡方程和温度相关迁移率方程捕获晶格温度升高的影响。通过与经标定的三维Sentaurus-TCAD电热仿真结果的比较,验证了所建模型的准确性。
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A Physics Based Model for DC Self-Heating in Nanowire-FET Considering Lattice Temperature
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.
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