Fabrication of III-V on insulator structures on si using microchannel epitaxy with a two-step growth technique

We report a new microchannel epitaxy (NICE) technique for forming III-V semiconductor on insulator (III-V-OI) structures on a Si substrate with a thermally oxidized SiO2 mask for high performance n-type metal-insulator-semiconductor field-effect transistors (MISFETs). To reduce dislocations and antiphase domains (APDs), we propose a novel fabrication method of forming III-V-OI structures, where a two-step growth method is combined with NICE. The growth temperature of the low-temperature buffer layers and the growth rate in the two-step growth are optimized to meet the competing requirements for the reduction in APDs and selective growth. We demonstrate a fabrication of high-quality GaAs-OI structures using our proposed growth method under an optimized growth condition.