Patent ID: 7288457

Claim:
A method for making a semiconductor device comprising: providing a semiconductor substrate; and forming at least one metal oxide semiconductor field-effect transistor (MOSFET) by forming spaced apart source and drain regions and a superlattice on the semiconductor substrate so that the superlattice is between the source and drain regions, the superlattice comprising a plurality of stacked groups of layers and having upper portions extending above adjacent upper portions of the source and drain regions and lower portions contacting the source and drain regions so that a channel is defined in lower portions of the superlattice, each group of layers of the superlattice comprising a plurality of stacked base semiconductor monolayers defining a base semiconductor portion and an energy band-modifying layer thereon, the energy-band modifying layer comprising at least one non-semiconductor monolayer constrained within a crystal lattice of adjacent base semiconductor portions, and at least some semiconductor atoms from opposing semiconductor portions being chemically bound together through the at least one non-semiconductor monolayer therebetween, and forming a gate overlying the superlattice.