What is NBTI (negative bias temperature instability)?

A degradation phenomenon in which the magnitude of a pMOS threshold voltage gradually increases under negative gate voltage at high temperature.

Field: Reliability

NBTI (negative bias temperature instability) in the explanations

Questions that mention NBTI (negative bias temperature instability) (3)

  1. Which phenomenon increases off-state leakage because band-to-band tunneling current flows due to the strong field where the gate overlaps the drain?
  2. Which degradation phenomenon causes the absolute value of a pMOS transistor's threshold voltage to gradually increase under sustained negative gate voltage and high temperature?
  3. In high-k/metal gate nMOS transistors, what is the degradation called in which the threshold voltage shifts when positive gate voltage and high temperature are applied continuously?

Related terms

Threshold voltage GIDL (gate-induced drain leakage) DIBL Interface states Arrhenius model Bathtub curve Electromigration ESD (electrostatic discharge) FIT rate Hot carrier injection (HCI)

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