Patent ID: 8450774

Claim:
A field-effect transistor device, said field-effect transistor device comprising: a first semiconductor layer; a second semiconductor layer; a passivation layer of HfO2 or any variation of Hafnium and Oxide compound; wherein said field-effect transistor device is pre-treated by buffered HF before deposition of said passivation layer; wherein said field-effect transistor device is post-treated by annealing in range of 300 to 450 C for 20 to 45 minutes after deposition of said passivation layer; wherein said field-effect transistor device is post-treated by remote F and H containing plasma after deposition of said passivation layer; wherein said field-effect transistor device is post-treated by gas source selected from H2, NH3, O2, or N2, after deposition of said passivation layer; and an encapsulation layer comprising Si3N4, SiO2, HfO2, or Al2O3, deposited after said passivation layer, using plasma enhanced chemical vapor deposition.