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We demonstrate scaled high-Ge-content (HGC) strained SiGe pMOS FinFETs with very high short channel (SC) performance using a Replacement High-K/Metal Gate (RMG) flow, for the first time. A novel RMG gate stack process was introduced to create Ge-free interface-layer (IL) with excellent reliability and sub-threshold swing (SS) as low as 62mV/dec, the best reported to date for Si-cap-free SiGe FinFETs...
We report the fabrication of short-channel FinFETs on InGaAs-on-silicon wafers using the aspect ratio trapping (ART) technique. We demonstrate excellent short-channel control down to 20 nm gate length due to scaled fin width down to 9 nm and reduction of parasitic bipolar effect (PBE). PBE that plagues III-V NFETs with gate-all-around (GAA) or III-V-on-insulator (III-V-OI) structures can be significantly...
We identified unique device width and length dependencies of Vt for FinFET Replacement Metal Gate (RMG). Choice of fill metal is important to obtain a flat Vt-Wdes trend. We proposed a new model for Vt-Lg roll-up for High-k last RMG and demonstrated a flat Vt-Lg trend via optimization of High-k and MOL films based on the understanding.
We demonstrate scaled High-Ge-Content (HGC) SiGe-OI finFET with Ge up to 71%, using a CMOS-compatible approach. For the first time, aggressively scaled HGC relatively-tall fins with vertical sidewalls and sub-10nm widths have been demonstrated using an enhanced 3D-Ge-condensation technique. An improved Si-cap-free HK/MG process featuring optimized IL has been developed resulting in scaled EOT and...
We demonstrate scaled High-Ge-Content (HGC) SiGe-OI finFET with Ge up to 71%, using a CMOS-compatible approach. For the first time, aggressively scaled HGC relatively-tall fins with vertical sidewalls and sub-10nm widths have been demonstrated using an enhanced 3D-Ge-condensation technique. An improved Si-cap-free HK/MG process featuring optimized IL has been developed resulting in scaled EOT and...
We demonstrate a Simple Gate Metal Anneal (SIGMA) stack for FinFET Replacement Metal Gate (RMG) technology, which uses only thin TiN layers as workfunction (WF)-setting metals for CMOS integration. The SIGMA stack provides 100× PBTI lifetime improvement via band alignment engineering. Moreover, the SIGMA stack enables 9nm more gate length (Lg) scaling compared to the conventional stack with matched...
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