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The chemical reactions at the higher-k LaLuO3/Ti1NX/poly-Si gate stack interfaces are studied after high temperature treatment. A Ti-rich TiN metal layer degrades the gate stack performance after high temperature annealing. The gate stack containing TiN/LaLuO3 with a near stoichiometric TiN layer is stable during 1000 °C, 5s anneals. Both electrical and structural characterization methods are employed...
Compressively strained Si1-xGex band-to-band tunneling field effect transistors with planar structure and HfO2/TiN gate stack have been produced and analyzed, with different Germanium concentrations of x = 0.35, 0.50 and 0.65. Simulations using a nonlocal band-to-band-tunneling model have been carried out to understand the switching behavior and its dependence on the material parameters. One would...
P-MOSFETs with HfO2 gate dielectric and TiN metal gate were fabricated on compressively strained SiGe layers with a Ge content of 50 at.% and electrically characterized. The devices showed good output and transfer characteristics. The hole mobility, extracted by a split C-V technique, presents a value of ~200 cm2/V·s in the strong inversion regime.
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