Ch. Ling et al., FOWLER-NORDHEIM STRESS DEGRADATION IN GATE OXIDE - RESULTS FROM GATE-TO-DRAIN CAPACITANCE AND CHARGE-PUMPING CURRENT, I.E.E.E. transactions on electron devices, 44(4), 1997, pp. 681-683
The buildup of positive oxide charge and interface trap charge, due to
Fowler-Nordheim stress, is observed in the gate-drain overlap region
of the MOSFET, Results from gate-to-drain capacitance and charge pumpi
ng current show a steady increase in positive charge near the anode in
terface. Interface trap generation becomes significant when injected e
lectron fluence exceeds similar to 10(14) cm(-2), and dominates net ch
arge creation at higher fluence.