New electrical testing structures and analysis method for MOL and BEOL process diagnostics and TDDB reliability assessment

Both MOL PC-CA spacer dielectric and BEOL low-k dielectric breakdown data are commonly convoluted with multiple variables present in the data due to the involvement of many process steps such as lithography, etch, CMP, cleaning, and thin film deposition. With the continuing aggressive scaling of dev...

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Hauptverfasser: Fen Chen, Mittl, S., Shinosky, M., Dufresne, R., Aitken, J., Yanfeng Wang, Kolvenback, K., Henson, W. K., Mocuta, D.
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container_start_page PI.1.1
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creator Fen Chen
Mittl, S.
Shinosky, M.
Dufresne, R.
Aitken, J.
Yanfeng Wang
Kolvenback, K.
Henson, W. K.
Mocuta, D.
description Both MOL PC-CA spacer dielectric and BEOL low-k dielectric breakdown data are commonly convoluted with multiple variables present in the data due to the involvement of many process steps such as lithography, etch, CMP, cleaning, and thin film deposition. With the continuing aggressive scaling of device dimensions and introduction of new device configurations, how to accurately analyze such complicated lateral dielectric breakdown data from MOL and BEOL TDDB in advanced VLSI circuits has become very challenging. In this paper, a new electrical method is developed to accurately characterize different variables in MOL and BEOL dielectric breakdown. This method provides a powerful way to do a fast deep dive process and reliability analysis for technology development and qualification without time consuming physical failure analysis.
doi_str_mv 10.1109/IRPS.2013.6532104
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Dielectric breakdown
Equations
Logic gates
low-k reliability
low-k TDDB
MOL reliability
Optical variables measurement
PC-CA reliabiltiy
PC-CA TDDB
Pollution measurement
Reliability
title New electrical testing structures and analysis method for MOL and BEOL process diagnostics and TDDB reliability assessment
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