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Fatal Void Size Comparisons in Via-Below and Via-Above Cu Dual-Damascene Interconnects
The median-times-to-failure (t₅₀’s) for straight dual-damascene via-terminated copper interconnect structures, tested under the same conditions, depend on whether the vias connect down to underlaying leads ...
Length Effects on the Reliability of Dual-Damascene Cu Interconnects
The effects of interconnect length on the reliability of dual-damascene Cu metallization have been investigated. As in Al-based interconnects, the lifetimes of Cu lines increase with decreasing length. However, unlike ...