TiN and TiN/Ti/TiN multilayer lms with dierent Ti-interlayer thicknesses of 50 and 100
A
were deposited by using a sputtering method and their metal barrier characteristics were investigated.
TiN lms showed relatively constant compositional depth p...
TiN and TiN/Ti/TiN multilayer lms with dierent Ti-interlayer thicknesses of 50 and 100
A
were deposited by using a sputtering method and their metal barrier characteristics were investigated.
TiN lms showed relatively constant compositional depth proles with slightly nitrogen rich
stoichiometry. TiN/Ti/TiN multilayer lms showed a relatively clear interface between the Ti and
the TiN layers. TiN lms showed barrier failure after annealing at 500 C while the TiN/Ti/TiN
multilayer lms showed higher failure temperatures than that of TiN lm. TiN/Ti/TiN multilayer
lms also showed that the temperature stability of barrier layer was enhanced with increasing Tiinterlayer
thickness. This study presents the barrier characteristics of TiN/Ti/TiN multilayer lms
and their potential applications as copper diusion barriers without any modication of the current
TiN deposition system