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HfTiO/GeOxNy and HfTiOn/GeOxNy stack gate dielectric are prepared by using wet-NO or wet-N2O pretreatment on Ge substrate. Experimental results show that the wet NO pretreatment can lead to excellent interface properties, gate leakage properties and device reliability, especially for the HfTiON/GeOxNy dielectric. The involvement mechanisms lie in the roles of N in blocking oxygen diffusion and Ge...
Pentacene-based organic thin-film transistor (OTFT) with HfO2 as gate dielectric is studied in this work. The HfO2 dielectric was prepared by RF sputtering at room temperature, and subsequently annealed in N2O or NH3 at 200degC. The OTFTs were characterized by IV measurement and 1/f noise measurement. The OTFTs show small threshold voltage and can operate at as low as 3 V. Results indicate that the...
A physical model describing the scattering behavior of holes in the channel of SiGe MOSFET due to interface roughness and remote charged defects of the high-k dielectric/SiO2 interface is proposed. Using the Fang-Howard's variational wave function, the hole mobility is calculated by considering the above two scattering mechanisms. Simulated results are in good agreement with experimental data
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