Patent ID: 7948008

Claim:
A floating body field-effect transistor comprising: a pair of source/drain regions having a floating body channel region received therebetween, the source/drain regions and the floating body channel region being received over an insulator; a gate electrode proximate the floating body channel region; a gate dielectric received between the gate electrode and the floating body channel region; the floating body channel region comprising a semiconductor Si x Ge (1-x) -comprising region; and the floating body channel region comprising a semiconductor silicon-comprising region received between the semiconductor Si x Ge (1-x) -comprising region and the gate dielectric, the semiconductor Si x Ge (1-x) -comprising region having greater quantity of Ge than any quantity of Ge within the semiconductor silicon-comprising region, the semiconductor Si x Ge (1-x) -comprising region comprising laterally outermost sidewalls, the source/drain regions individually elevationally overlapping with and being laterally outward of said laterally outermost sidewalls of the semiconductor Si x Ge (1-x) -comprising region, insulative material received laterally between at least some of said laterally outermost sidewalls of the semiconductor Si x Ge (1-x) -comprising region and the individual source/drain regions.