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A single pulse technique with a wide range of pulse times has been applied to study trap charging and discharging mechanisms in nMOSFET high-k devices. It is shown that both charging and discharging are controlled by two distinctive processes with different characteristic times. A proposed characterization methodology, which separates the relaxation effects associated with the fast transient charging/discharging...
The power law dependence of the threshold voltage shift (DeltaV th) on stress time for high-k nMOSFETs is studied using a single-pulse Id-Vg technique. The power law exponent value is found to be strongly affected by fast transient charge detrapping during the stress interruption time, which may result in an inaccurate lifetime prediction. A new analysis method that eliminates the impact of the stress...
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