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A technique has been developed to fabricate transistors using a continuously scaled 0-2.5-nm SiO2 interface layer between a silicon substrate and high-κ dielectric, on a single wafer. The transistor results are promising with good mobility values and drive current. The slant-etching process has no detrimental effect on the electrical characteristics of the Si/SiO2 interface. This technique provides a powerful tool in examining the effect of the process variations on device performance.
Date of Publication: July 2006