Self-heating effects on strained Si/SiGe n-HFETs

Mauro Enciso, Frederic Aniel, Laurent Giguerre, Thomas Hackbarth, Hans Herzog, Ulf König, B. Höllander, Siegfried Mantl.

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

We report an investigation on self heating effects on SiGe based HFET for the first time. Si/SiGe n- HFETs exhibit excellent high frequency performance with fr- of 90 GHz [1) (105 GHz |2]), fMAX of 188 GHz (225 GHz) J3] at 300 K (50 K), low noise figure NFMIN of 0.3 dB at 2.5GHz at 300 K [4|. These figures of merit reflect the superior transport properties of the SiGe based heterosytem as compared w ith bulk Si devices. However some detrimental effects such as parasitic resistances or electrostatic parasitic capacitances as well as self heating effects can mask their strained enhanced intrinsic transport properties. In this communication the last point is addressed through experimental data and 2-D numeric simulations results. Self-heating influence on device performance is pointed out and alternatives to overwhelm them are presented in terms of a device performance comparison between SiGe HFETs prepared on thin and thick virtual substrates (VS).

Original languageEnglish
Title of host publication2003 International Semiconductor Device Research Symposium, ISDRS 2003 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages162-163
Number of pages2
ISBN (Electronic)0780381394, 9780780381391
DOIs
StatePublished - 2003
Externally publishedYes
EventInternational Semiconductor Device Research Symposium, ISDRS 2003 - Washington, United States
Duration: 10 Dec 200312 Dec 2003

Publication series

Name2003 International Semiconductor Device Research Symposium, ISDRS 2003 - Proceedings

Conference

ConferenceInternational Semiconductor Device Research Symposium, ISDRS 2003
Country/TerritoryUnited States
CityWashington
Period10/12/0312/12/03

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