Patent ID: 9548378
Date: 2017-01-17
CPC Classifications: H01L

Claim:
1. A method for forming a field effect transistor (FET), comprising: providing multiple substrates, each of the multiple substrates having therein at least one semiconductor (SC) region with a substantially flat outer surface; modifying such substantially flat outer surface of each of the multiple substrates to form a convex-outward curved surface, wherein the step of modifying is performed on each of the multiple substrates simultaneously using a single fabrication tool; forming an epitaxial layer of a first thickness on the curved surface of each of the multiple substrates, wherein the step of forming is performed on each of the multiple substrates simultaneously using the single fabrication tool, and wherein the epitaxial layer has a substantially uniform thickness; and incorporating the epitaxial layer of each of the multiple substrates in one or more field effect transistors formed on the substrates, wherein a gate electrode of the one or more field effect transistors is formed entirely over the epitaxial layer.