Low-Temperature Chemical Vapor Deposition of Silicon Nitride Using A New Source Gas (Hydrogen Azide)

Abstract
Silicon nitride films were deposited at temperatures as low as 350°C by chemical vapor deposition using a new source gas, hydrogen azide (HN3). Silicon nitride film deposited at 425°C was nitrogen-rich and showed hydrogen content of about 28 atomic%. The breakdown field strength was as high as 8.7 MV/cm and the resistivity was as high as 1015 Ω·cm. Amorphous silicon thin-film transistors equipped with this film as the gate dielectric showed good transistor characteristics.