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Watermark induced High Density Via failures in sub micron CMOS fabrication

Authors: Alex Chew; H.H. Au; S.H. Han; T.L. Neo; Jackson Tan; K.W. Chai; Samuel Chua;

Watermark induced High Density Via failures in sub micron CMOS fabrication

Abstract

High via resistance was detected in the high density via structure in our 0.15 mum BEOL (Back-End-Of-Line) yield monitoring test vehicle. A localized insulating layer was found on top of plug in test vehicle causing high via resistance. The failure was attributed to watermark induced contaminants on top of the W plug. It was shown that the failure could be avoided by eliminating watermark formation on the wafer in the post CMP cleaning process.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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