Plasma-Enhanced Chemical Vapor Deposition of Fluorinated Silicon Nitride

Abstract
Fluorinated silicon nitride films are deposited by the plasma-reaction of SiF4–N2–H2 gas mixture. The fluorine content in the film is ∼25 at%. Although hydrogen is incorporated in the form of N–H bonds, the bondings remain stable up to 640°C. The films have relatively high resistivity (7×1016 Ωcm at 2 MV/cm), high breakdown strength (10 MV/cm), and low deep trap density.