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Reduced self-heating by strained silicon substrate engineering

Lookup NU author(s): Professor Anthony O'Neill, Rouzet Agaiby, Dr Sarah Olsen, Yang Yang


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Substrate engineering innovations such as SOI and the use of Si/SiGe virtual substrates become necessary in order to maintain performance leverage of integrated circuits with continued scaling. The relevance of thermal effects in device design increases since the thermal conductivity of these new materials is poor. The electrical performance of devices fabricated on thin virtual substrates grown by two different techniques is presented. It is found that self-heating is reduced and that thermal resistance measurements agree with modelling predictions. The reduction in performance enhancement seen in many strained Si MOSFETs is found here to be largely due to self-heating effects, rather than parasitics or the loss of strain. © 2008 Elsevier B.V. All rights reserved.

Publication metadata

Author(s): O'Neill AG, Agaiby R, Olsen S, Yang Y, Hellstrom P-E, Ostling M, Oehme M, Lyutovich K, Kasper E, Eneman G, Verheyen P, Loo R, Claeys C, Fiegna C, Sangiorgi E

Publication type: Article

Publication status: Published

Journal: Applied Surface Science

Year: 2008

Volume: 254

Issue: 19

Pages: 6182-6185

ISSN (print): 0169-4332

ISSN (electronic): 1873-5584

Publisher: Elsevier BV


DOI: 10.1016/j.apsusc.2008.02.172


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