Hot-carrier to cold-carrier device lifetime modeling with temperature for low power 40nm Si-bulk NMOS and PMOS FETs
The persistence of hot-carrier degradation down to low voltages is analyzed in recent CMOS nodes through the effect of multivibration excitation (MVE) of the Si-H bonds and deexcitation by multiphonon emission. This new mechanism is described by an energy framework and originates from the channel current density independently of voltage and geometry. MVE mode is enhanced with temperature in NMOS and PMOS devices due to its strong coupling to the lattice disregarding the negative bias contribution in PMOS.