The growth and electrical properties of high quality ultrathin oxide and ox
ynitride films on strained-Si0.74Ge0.26 layers using microwave O-2, NO and
NO/O-2/NO-plasma are reported. A significant improvement in the dielectric
endurance and charge trapping behaviour under Fowler-Nordheim (F-N) constan
t current stressing is observed for NO/O-2/NO grown oxynitride films.