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Optimisation of channel thickness in strained Si/SiGe MOSFETs

Lookup NU author(s): Dr Kelvin Kwa, Dr Sanatan Chattopadhyay, Dr Sarah Olsen, Luke Driscoll, Professor Anthony O'Neill


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It is demonstrated from experimental I-V and C-V data, and confirmed by computer simulation, that strained Si/SiGe MOSFET performance severely degrades below a channel thickness of 7 nm. MOSFETs with strained Si channels of thickness 5 nm, 7 nm and 9 nm have been fabricated using a conventional high thermal budget process. The performance degradation is attributed to Ge diffusion through the strained Si layer, which causes a build lip of gate oxide charge.

Publication metadata

Author(s): Kwa KSK, Chattopadhyay S, Olsen SH, Driscoll LS, O'Neill AG

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 33rd European Solid-State Device Research Conference (ESSDERC)

Year of Conference: 2003

Pages: 501-504

Publisher: IEEE


DOI: 10.1109/ESSDERC.2003.1256923

Library holdings: Search Newcastle University Library for this item

ISBN: 0780379993


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