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This paper reports a novel material/process-based design for reliability-aware Ge gate stack for the first time. Initially good characteristics of Ge gate stacks do not necessarily guarantee the long-term device reliability. To overcome the big hurdle, we have investigated the stability of GeO2 network as well as the formation of new high-k. The very robust Ge gate stack with both 0.5 nm EOT and sufficiently...
This paper reports a novel material/process-based design for reliability-aware Ge gate stack for the first time. Initially good characteristics of Ge gate stacks do not necessarily guarantee the long-term device reliability. To overcome the big hurdle, we have investigated the stability of GeO2 network as well as the formation of new high-k. The very robust Ge gate stack with both 0.5 nm EOT and sufficiently...
This paper presents experimental results of the counter dipole formation in SiO2/high-k (Al2O3 and Y2O3)/SiO2/Si gate stacks for the first time. The results definitely support the high-k/SiO2 interface dipole layer formation in metal/high-k gate CMOS.
This paper will first discuss intrinsic advantages of high-pressure oxidation of Ge and then present further improvement of electron mobility in Ge n-MISFET using high-k gate stacks combined with high-pressure oxidation. The peak mobility is about 1500 cm2/Vsec, which is the highest one to date among unstrained Si and Ge MISFETs. Ge-CMOS is a strong candidate for beyond Si-CMOS.
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