Patent ID: 7514328
Filing Date: 2009-04-07
Classification: B82Y,H01L

Abstract:
1. A method for making a semiconductor device comprising: forming a plurality of shallow trench isolation (STI) regions in a semiconductor substrate; depositing a plurality of layers over the substrate to define respective superlattices over the substrate between adjacent STI regions and to define respective non-monocrystalline regions over the STI regions, each superlattice comprising a plurality of stacked groups of layers with each group comprising a plurality of stacked base semiconductor monolayers defining a base semiconductor portion and at least one non-semiconductor monolayer thereon, and with the at least one non-semiconductor monolayer being constrained within a crystal lattice of adjacent base semiconductor portions; and selectively removing at least portions of the non-monocrystalline regions using at least one active area (AA) mask.