M. Ershov, R. Lindley, S. Saxena, A. Shibkov, S. Minehane, J. Babcock, S. Winters, H. Karbasi, T. Yamashita, P. Clifton, M. Redford
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Transient effects and characterization methodology of negative bias temperature instability in pMOS transistors
We report a new effect - relaxation of pMOSFET degradation due to negative bias temperature instability (NBTI). "Apparent" NBTI degradation is reduced ("recovered") by as much as 30-50% after stress interruption, which can increase device lifetime by a factor of 10-30. Some problems associated with extrapolation of degradation with respect to time and stress voltage are also discussed.