A novel SiGe-inserted SOI structure for high performance PDSOI CMOSFETs
2000
A novel partially-depleted silicon-on-insulator (PDSOI) CMOSFETs with SiGe-inserted layer have been proposed. The SiGe-inserted layer in NMOS successively suppresses the floating body effects (FBE) by lowering the body-to-source potential barrier to hole current. It also provides a good current performance in PMOS by inducing the change of channel dopant distribution and increasing the efficiency of pocket ion implantation. Consequently, SiGe-inserted SOI devices achieve higher drain-to-source breakdown voltage in NMOS due to the suppression of FBE and increase drive currents of both NMOS and PMOS by 10% and 15%, respectively, compared to conventional PDSOI devices.
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