Patent ID: 9093326
Filing Date: 2015-07-28
Classification: H01L

Abstract:
1. A semiconductor structure comprising: a semiconductor oxide material portion that contains a semiconductor oxide layer located on a semiconductor material layer and further contains a plurality of semiconductor oxide pedestals that protrudes above said semiconductor oxide layer; a plurality of silicon germanium alloy fins located on said plurality of semiconductor oxide pedestals, wherein each of said plurality of silicon germanium alloy fins is located directly on, and above, one of said plurality of semiconductor oxide pedestals, and wherein said plurality of semiconductor oxide pedestals has a greater concentration of germanium atoms than said semiconductor oxide layer; and a shallow trench isolation structure contacting a top surface of said semiconductor oxide layer and sidewalls of said plurality of semiconductor oxide pedestals, wherein bottommost portions of said plurality of silicon germanium alloy fins are more distal from said semiconductor oxide layer than a planar top surface of said shallow trench isolation structure is from said semiconductor oxide layer.