Zx. Zhou et al., POST POLY-SI GATE RAPID THERMAL NITRIDATION FOR BORON PENETRATION REDUCTION AND OXIDE RELIABILITY IMPROVEMENT, IEEE electron device letters, 19(7), 1998, pp. 237-240
Boron penetration from p(+) doped poly-Si gates in PMOSFET is greatly
reduced by post poly-Si gate rapid thermal nitridation. Gate oxide rel
iability against boron penetration is significantly enhanced. When pos
t poly-Si nitridation is combined with N2O annealed gate oxides, gate
oxide charge-to-breakdown is markedly improved.