Patent ID: 6864520

Claim:
An electronic chip having at least one layer of material for which a carrier mobility of a first carrier type is higher in a first crystal surface than in a second crystal surface and for which a carrier mobility of a second carrier type is higher in said second crystal surface than said first crystal surface, said electronic chip comprising: a first device having at least one component fabricated on said first crystal surface of said material, wherein an activity of said at least one component of said first device involves primarily said first carrier type, said first crystal surface resultant from a first etching that is selective to provide said first crystal surface as a final device surface; and a second device having at least one component fabricated on said second crystal surface of said material, wherein an activity of said at least one component of said second device involves primarily said second carrier type said second crystal surface resultant from a second etching that is selective to provide said second crystal surface as a final device surface.