Modeling thermal effects in nanodevices

Katerina Raleva, Dragica Vasileska, Stephen M. Goodnick, Mihail Nedjalkov

Research output: Contribution to journalArticle

94 Scopus citations

Abstract

In order to investigate the role of self-heating effects on the electrical characteristics of nanoscale devices, we implemented a 2-D Monte Carlo device simulator that includes the self-consistent solution of the energy balance equations for both acoustic and optical phonons. The acoustic and optical phonon temperatures are fed back into the electron transport solver through temperature-dependent scattering tables. The electrothermal device simulator was used in the study of different generations of nanoscale fully depleted silicon-on-insulator devices that are either already in production or will be fabricated in the next five to ten years. We find less degradation due to self-heating in very short channel device structures due to the increasing role of nonstationary velocity-overshoot effects which are less sensitive to the local temperature.

Original languageEnglish (US)
Pages (from-to)1306-1316
Number of pages11
JournalIEEE Transactions on Electron Devices
Volume55
Issue number6
DOIs
StatePublished - Jun 1 2008
Externally publishedYes

Keywords

  • Acoustic and optical phonons
  • Boltzmann transport equation (BTE)
  • Nanodevices
  • Particle-based device simulations
  • Scaling
  • Thermal effects

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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