Impact of self-heating effect on the electrical characteristics of nanoscale devices

Yoshinari Kamakura*, Tomofumi Zushi, Takanobu Watanabe, Nobuya Mori, Kenji Taniguchi

*この研究の対応する著者

研究成果: Conference contribution

抄録

Hot phonon generation and its impact on the current conduction in a nanoscale Si-device are investigated using a Monte Carlo simulation technique. In the quasi-ballistic transport regime, electrons injected from the source lose their energies mainly by emitting optical phonons in the drain. Due to the slow group velocity of the optical phonons, the efficiency of the heat dissipation is so poor that a region with a nonequilibrium phonon distribution, i.e., a hot spot, is created. In this study, we have implemented the hot phonon effect in an ensemble Monte Carlo simulator for the electron transport, and carried out the steady state simulations. Although it is confirmed that the optical phonon temperature in the hot spot is larger than that of acoustic phonons by > 100 K, the electron current density is not significantly affected. The local heating would degrade the hot electron cooling efficiency and the parasitic resistance in the drain, but they have a minor impact on the quasi-ballistic electron transport from the source to the drain.

本文言語English
ホスト出版物のタイトルTechnology Evolution for Silicon Nano-Electronics
出版社Trans Tech Publications Ltd
ページ14-19
ページ数6
ISBN(印刷版)9783037850510
DOI
出版ステータスPublished - 2011

出版物シリーズ

名前Key Engineering Materials
470
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

ASJC Scopus subject areas

  • 材料科学一般
  • 材料力学
  • 機械工学

フィンガープリント

「Impact of self-heating effect on the electrical characteristics of nanoscale devices」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル