Extendibility of ultra long throw Ti-barriers passivated in nitrogen
This study involves evaluation of a Ti liner deposited by long throw (i.e. Hi-fill and ULTRA) and comparison of different cooling regimes using Ar and N2 as atmosphere in the case of ULTRA. The use of N2-based cooling led to a surface passivation against oxidation. Therefore the effective Ti-thickness could be reduced by a factor of 1.5. Surface analysis and electrical results are discussed within the paper.
long throw liner barrier contact