Patent ID: 8828818

Claim:
A method of forming an integrated circuit device, comprising: depositing a compound semiconductor layer comprising first and second semiconductor materials directly onto sidewalls of first and second semiconductor fins having unequal concentrations of the first and second semiconductor materials therein relative to each other, said depositing further comprising depositing the compound semiconductor layer directly onto an isolation layer extending adjacent the first and second semiconductor fins and onto a mask layer covering a third semiconductor fin; oxidizing the first semiconductor material within the compound semiconductor layer for a sufficient duration to drive at least a portion of the second semiconductor material within the compound semiconductor layer into the first and second semiconductor fins, using the mask layer to block transfer of the second semiconductor material from the compound semiconductor layer into the third semiconductor fin; and removing oxidized portions of the compound semiconductor layer to thereby expose the sidewalls of the first and second semiconductor fins having unequal concentrations of the second semiconductor material therein and expose the isolation layer extending adjacent the first and second semiconductor fins.