Silicon oxynitride, SiOxNy (x, y similar to 1), grown by flash deep-ul
traviolet chemical vapor deposition (FUV CVD) has attractive optical,
electrical, mechanical and chemical properties which make it a suitabl
e dielectric with low dielectric constant for both microelectronics an
d photonics applications. At low temperatures (300-400 degrees C) larg
e area nearby-stoichiometric films are deposited. At different precurs
or flow ratios, SiOxNy films are obtained with variable x and y. This
allows variation of optical functions with x and y. FUV CVD films are
low in hydrogen and free of water and hydroxyl. Since the deposition t
emperature is significantly lower Man that observed in other conventio
nal techniques, they are essentially free of stress.