Chemical vapor deposition of a silicon nitride layer with an excellent interface by NH3 plasma treatment

Abstract
A new metal‐insulator‐semiconductor field‐effect transistor (MISFET) fabrication technology has been developed by using a silicon nitride insulator. MISFET’s with high field‐effect mobility were obtained by exposing a silicon surface to a NH3 plasma before silicon nitride (SiNx) deposition as a gate insulator in a rf plasma. An Auger spectrum showed possible nitridation of silicon by NH3 plasma treatment.