Patent ID: 9472573
Filing Date: 2016-10-18
CPC Classification: H01L

Claim Text:
1. A method of forming a set of semiconductor fins, the method comprising: forming a base structure including a silicon substrate, an insulator layer stacked on the silicon substrate, and a plurality of silicon semiconductor fins each stacked directly on the insulator layer; depositing a first atomic layer of germanium atoms on a first set of semiconductor fins in the plurality of semiconductor fins; annealing the first atomic layer and the first set of semiconductor fins; and forming, from the annealing, a first set of silicon-germanium semiconductor fins; depositing a second atomic layer of germanium atoms on the first set of silicon-germanium semiconductor fins; annealing the second atomic layer to the first set of silicon-germanium semiconductor fins; and forming, by the annealing, a second set of silicon-germanium semiconductor fins.