In situ observation of electromigration-induced void migration in dual-damascene Cu interconnect structures

A. V. Vairagar, S. G. Mhaisalkar, Ahila Krishnamoorthy, K. N. Tu, A. M. Gusak, Moritz Andreas Meyer, Ehrenfried Zschech

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

109 Citations (Scopus)

Abstract

Electromigration mechanism in dual-damascene Cu interconnect structures was analyzed by in situ electromigration characterization using scanning electron microscopy. Void formation and migration on the Cu/dielectric interfaces was observed. The different electromigration behaviors of the upper and lower layer dual-damascene structures were also discussed. It was concluded that the findings can led to a better understanding of real electromigration mechanisms in dual-damascene Cu interconnects.
Original languageEnglish
Pages (from-to)2502-2504
JournalApplied Physics Letters
Volume85
Issue number13
DOIs
Publication statusPublished - 27 Sept 2004
Externally publishedYes

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