Patent ID: 8779475
Filing Date: 2014-07-15
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: forming an insulating isolation layer on a substrate; forming a first insulating isolation layer trench in the insulating isolation layer; forming a first active region layer in the first insulating isolation layer trench; forming a second insulating isolation layer trench in the insulating isolation layer; forming a second active region layer in the second insulating isolation layer trench; and forming a semiconductor device structure in and above the first and second active region layers; characterized in that the carrier mobility of the first and/or second active region layer is higher than that of the substrate, and in that the substrate is silicon, the first active region layer is formed of a first material with a hole mobility higher than that of the substrate, and the second active region layer is formed of a second material different from the substrate with an electron mobility higher than that of the substrate, wherein the first material is different from the second material, and both the first and second material are different from the substrate, and wherein the first and second insulating isolation layers are formed in the trenches whereby the first and second active region layers are embedded or in direct contact with the substrate.