Fully depleted strained-SOI n- and p-MOSFETs on bonded SGOI substrates and study of the SiGe/BOX interface

Fully depleted strained-Si n- and p-MOSFETs have been demonstrated on bonded-SiGe-on-insulator (SGOI) substrates. The fully depleted devices show significant electron and hole mobility enhancements of 60 and 35%, respectively, demonstrating that high material quality, thin SGOI substrates can be fabricated by a wafer bonding approach. The bottom SiGe/buried-oxide interface in the SGOI structure and its impact on fully depleted device performance are also investigated.